Cratered primers

Especially in handguns. Cratered Primers Not to reloading, but to trying to find an exact proven load for a given round and boolit weight. I have started using mag primers for my H110/296 loads just for more uniform ignition as winter approaches. Looking at the once fired Peterson brass, all the primers Journey Of Reloading The 5. Any of these by them-selves may not be indicative of extreme pressures but all of them combined will surely tell the experienced reloader that 42. 308). 5 Creedmoor. I did, however, manage to break 2400fps with a 125gr bullet As you work your loads up look for abnormally flattened primers and especially cratered primers. Hard bolt lift and loosen primer pockets would be a better sign. POSTAGE PAID SEDALIA, MO PERMIT #29 PO Box 818 • 1400 West Henry Street • Sedalia, MO 65301 We get asked countless times for load data and we do everyRifle Round Reloading Guide. 3) As the pressure continues to build the case is forced back against the breech face and the extended primer. This is a basic step-by-step guide to reloading rifle rounds (specifically . 11-15-2015, 02:31 AM #9. I tried a total of 15 from 10 manufacturers, with a 16th as the aforementioned follow-on which became available after the others were ‘done’. 47. I would let your cases headspace on the shoulder and decrease your head clearance and see what your primers look like. If you begin to experience heavier recoil, difficult bolt lift, sticky extraction, flattened primers, or other signs of excess pressure, discontinue firing these rounds immediately as you have reached your pressure limit. Though you’ll see the results of using the BR-4 primers in the Table 4 graph, I dropped these in the 6. As I was leaving the range, I ran into a group of guys getting ready to shoot a 600 yd high power match. If your are worried about it though, I suggest calling Hornady. This if usually the first sign of too much pressure. If you see these conditions, exercise caution because you may, in fact, have excessively hot loads. 458 Lott Ballistics. com DO NOT ATTEMPT TO LOAD YOUR M1A UNTIL YOU HAVE READ THIS MANUAL!The primer in the photo above is from a neck-sized . It opened up a little after that to about 1" groups but all in all great. springfieldarmory. Because I’ll be using Magnum small rifle primers in a couple cases, I’m backing off the load a little. 1-3410- av- 3427 2-3427- es- 35 3-3445- sd- 17: 0 1 1 Finally, watch for flattened primers, cratered primers and especially extrusion of the case head into the ejector pin hole in your reloads; these are all indications of unacceptable pressure. Starting at 61gr, published MAX is 65. I once scared myself with cratered primers in a 9mm handbook load until I realized I had used soft Federal primers that I normally reserve for revolvers. Two loads were fired using 40. Also look for: Case head expansion. I prefer using 2400 to get the "V" up for hunting purposes, but don't like the sticky ejection and flat/cratered primers that I find with moderate loads in 38 brass. The primer brand can also have an effect on the amount of flattening. I ever bothered with replacing the bolt on mine, it's not a pressure sign it's common on many mausers with large firing pin holes too. There is a great deal of variation in the order of appearance and the severity that each sign may present. Maybe it is just a pressure spike with the Gold Medal 215 Match primers. A pierced primer should never happen with a firearm in good working order, so always think pressure. If you can find some Federal 205 Match primers they'll tell you if the rifle is at fault without masking any issues. Cratered Primers. If it begins to stiffen then you know you have pressure issues. Not only was there a noticeable increase in blast with a one grain increase, but I had flat, cratered primers and heavy extractor marks. 8 grain load of WW296. If you have any reason to question the safety of any cartridge do not use it and safely discard it immediately. Sticky bolt lift, and ejector hole marks on the case are my favorite early warning signs. Introduction. Craters may look interesting on the moon, but you don't want to see them on your primers. I can tell you with certainty that every engineer wants to produce the best design they can, and will push up against the limits of their available resources to do so. These signs include very flat primers, slightly cratered primers, ejector marks on the case head, and stiff extraction. Are the CCI's just really hard? Other than looking like I'm severly over-pressure, they shoot the same. These things seem way too hot and/or soft primers. Don't shoot the leverevolution ammo out of these guns. Looking at the once fired Peterson brass, all the primers are cratered. 56 pressures. by Kevin Wilson. I'm going to say this with an important warning: Work up to it first, always checking for over-pressure signs (cratered primers, splits, hard to eject). The metal thats cratered around the firing pin hole , its not just deformed , it could be displaced material from another part of the primer & could have weakened it . Nonetheless — all these signs (flattened primers, cratered primers, split cases) CAN be valid warnings. If the rifle has not exhibited a cratering Primers are flattened somewhat, but without extrusion for blanking. I've found that the . They may very well fail. See how the spring is bent back near the arm, I took a heavy bladed screwdriver and pushed down between the coils and opened the gap up so it looks like this. A chrono is usually a good tool to help too. Also when using unique, magnum primers are not necessary. Shooting the same load for years, but when I started with the CCI primers, they are SEVERLY cratered. ) The hotter the load, the more cratering of primers is apparent, but it doesn't seem to be hurting anything as my SPS Varmint has digested a couple of thousand rounds and still shoots around 1/2 MOA. One of the selling points for me was CZ’s literature in which they repeatedly make the claim that this rifle is designed to handle ammunition loaded to 5. Yes. Primers very flat but not cratered. The procedure for reloading other rifle calibers is basically the same, however the specifications will need to be adjusted. 7x28mm. Loading Unsubscribe from  Cratered and Flat Primers - Pennsylvania Firearm Owners forum. It's not a The bottom case shows cratering of the primer, usually associated with high pressures. 4g and 41. That is one good incentive to not use max loads on a regular basis. It's call a drop test. I'd say those cups are softer than most. o175 diameter i used fed 357 mag cases and the pockets are fairly uniform help (But the Remington still outshoots the others in spite of the cratered primers. While certainly not a world-class target gun, the 92A1 can keep a grouping well within MOI (Minute of Intruder). Logged "I'm a strong believer in teaching the value of the three "R's" Retribution, reckoning and revenge!" *In addition to CCI 450 small rifle magnum primers, the 260 test included CCI BR-4 small rifle match primers but misfires were occurring at a rate of ≈8% primarily during the 1 st firing. This bolt is complete and compatible with any direct impingement 308 carriers. Does anyone have problems with the CCI primers cratering worse than others? I normally use Winchester primers but the local retailers were out. Remington 700 cf action AGS lrmp gen 2 plug. 44 mag ammo and was surprised to see them go through the chrono at 1513 FPS. as a combination of cratered primers, flat primers or even a slight hitch in the bolt lift. 3 to 0. 0g H-4831sc and the 75 A-Max group in the . "Cratered" or pierced The concern that most are expressing is that you have primers that are being punctured/pierced by funky firing pin and/or pressure That would explain the bits of material you've found. 2007-07-18 · I recently started to practce handloading. As you work your way up, be on the lookout for signs of excess pressure. Whether you are shooting factory ammunition or your own handloads, you absolutely must be able to detect and interpret pressure signs on your fired brass. Cratered primers and significant ejector marks on the brass. 7" Barrel. And I know enlarged primer pockets are a sign of pressure So here’s my situation. Federal No. This is a safe and reliable  Rem 700 Stainless - Primer Cratering - The Firing Line Forums thefiringline. The brass is once-fired Federal, the bullet a 210 grain Sierra JHC, primer a CCI 350 magnum, and the charge is 17. Forming, Loading, and Shooting the 22BR Here's the 6mmBR. A old timer at the range told me to try a standard sm pistol primer. com with permission from the author Trent — over on The Highroad Forum. The latest 700 I got in . I suspect the load is on the way hot side for your rifle. Most primers are made with cartridge brass (70% copper, 30% zinc), which can vary from 46,000 psi, soft, to 76,000 psi tensile strength when fully hardened. 8’s @ 200 yards with velocities from 3150 to 3200 fps respectively. Working No thanks 1 month free. I think the Winchester primers are just from a bad batch after doing some research. However, that is not the only reason for a cratered primer. Cratered primers are very common in the Rem action. Fast forward to now. The first condition occurred with a box of . I know their factory ammo is loaded light so pierced or excessively cratered primers would probably never occur. 308 this friday to test my last ladder loads (peaking at 44. In 1983, the “XM9” testing started, this time with the US Army leading the selection process. Ammo with mil spec hard primers may take this cratering and not fail, but I'd look at replacing the bolt and pin. Back then, flattened or cratered primers and hard ejection were the indicators. Re: bush firing pin to end cratered primers-worth Ah, thanks all. A huge improvement, in my opinion 1/2 moa @ 110 yds. I just had similiar issues of pierced primers with a nice clean seldon used, Remingon 700 243, Win 70 rifle, testing reloads using Remington 9 1/2 Large rifle primers with the brass colored cups. Try changing the brand of primers you use when reloading. Journey Of Reloading The 5. In parts 1 and 2, I’ve got as far as listing the primers that are generally available in the UK and summarising their characteristics – in particular, cup thickness/strength. Stock Painting Guide Tips on Color and Clear-Coat Paint Application by Mike Ricklefs. I've seen people go to 54 with no pressure issues, but I started getting some cratered primers right around 53. A. There will always be 4 or 5 guys that say it makes no difference and then we see photos of cratered primers with the question "what is wrong with my rifle?" Real men do the right thing because it's the right thing to do, not because some law or religion tells you to. If any of these conditions is present, cratering can occur with all types of primers and at perfectly normal operating pressures. I ´ve been using Winchester 748 powder to reload . OlympicViking. So, there it is. but no other signs, I can honestly live with cratered primers, I don't really rely on that as a sign of overpressure, extractor groove expansion and extractor marks are what i'm looking for. It came with some loaded rounds, 8 total shots fired 10 twist on a 700 action. It looks like the primers are being pushed into the firing pin hole. Yesterday I went out to again try to find a good working load It had cratered primers, severe marks from the extractor and had a tell tale bulge like pic #4 in the link. Starting to get warm, slightly cratered primers, no ejector marks, no tight bolt handle. Also, I'm not a fan of reading primers as a sole indication of pressure. The original three loadings each had an intended class of game for which it was designed. Left to right: 6. the chamber is nice and brite, spent shells resize and reload fine. Velocity taken at 15 feet, using Oehler Model 33 Chronotach. POSTAGE PAID SEDALIA, MO PERMIT #29 PO Box 818 • 1400 West Henry Street • Sedalia, MO 65301 We get asked countless times for load data and we do every Rifle Round Reloading Guide. To be honest, I had excessively sticky extraction and cratered primers with federal blue box in my 308 rifle. If you're seeing nasty ejector wipe along with flat and cratered primers, you'll want to be stopping. 6MM PPC -- The Benchmark of AccuracyDeveloped by Louis Palmisano and Ferris Pindell (left and right in photo), the 6PPC is the King of the Hill in short-range benchrest competition, the most accurate cartridge ever invented. I tried 10 and gave up. And anything else whatever that strikes you as abnormal about the load. Even in rifles I have seen loads that show cratered Great article! What difference would Magnum primers make? In South Africa, our sole powder manufacturer (Somchem), provides load data, but only with CCI 250 primers for 6. The Beretta 92S-1 (a precursor to the M9) won this series of trials. The primers stop backing out if I seat the bullets far enough out that they touch the lands, which effectively removes the excessive space. Examine each series very carefully watching for excessive pressure symptoms such as a combination of cratered primers, flat primers or even a slight hitch in the bolt lift. 1 for a 160 BTSP. The primers are not the slightest bit flattened and you dont have ejector marks impressed into the case head, so I would think that it is not a high pressure situation ,but it has more to do with the shape of the bolt face around the firing pin hole. We cover 22BR case-forming, reloading, . My reloads are lead cast (Lee mold) 102 grain bullets and have an real life velocity out of the Pico of 862 fps which translates to 168 ft-lbs of energy. The three models were the standard model, the Target Patriot and the Crimson Patriot. 9gr Varget) and I noticed from 42. The first round of tests began in 1979 under the JSSAP (Joint Service Small Arms Program) managed by the US Air Force. In the case of Varget, compressed loads. I am however a little concerned about the cratered primers on the loads. There can be a bright spot on the base of the case indicating brass flow. Can anyone think of a downside to having cratered primers or should I go along and shoot the rifle normally and not worry? I've been shooting model 700s for 40 years or more. Firing pin diameters must match their associated hole diameter as close as possible without sticking or binding. Looking for some insight here…I recently purchased a CZ 527 youth carbine chambered in 223. com Guide to the 22BR cartridge and 22BR precision shooting. These primers had little craters formed around the indentation, and on one of the higher pressure loads the firing pin penetrated completely with black stuff coming out. The standard model patriot was a 2. 308 reload with a maximum powder charge. Federal 215 magnum primers, for example, burn longer than CCI 250s, which are also magnum primers, and in almost every case, one will work better than the other. The brass may have been sized down more than necessary to fit your rifle. I've since reduced that load to 48 gr, since occasionally with warm weather the load has proved a little too hot--leading to cratered primers and sticky ejection. I also discovered that though I have Rioed the primer holes of 100 once-fired 28 gauge AA compression hulls, they seem capable of still taking and holding a WW-209. BULK RATE U. The weight, which tips the scales at 34. com DO NOT ATTEMPT TO LOAD YOUR M1A UNTIL YOU HAVE READ THIS MANUAL!2015-05-07 · Two points to bring up - reading primers is not a reliable indicator of pressure. False (The correct answer is False: Cratered primers can be caused by high pressure, or by a weak firing pin fall, or by space between the firing pin and the hole for it in the bolt face. trimming all the cases to the same length and setting the bullet to there proper depth the same ammo now shoots 2"groups at 50 Yds. I had tried a number of loads and kept getting cratered primers no matter what load I was using. I am really excited to bring this article to readers of dayattherange. Bushing your bolt will forever eliminate cratered primers. The elimination of cratered primers. Replaced the factory 223 tube with a Criterion 223AI barrel, and still occasionally see slightly cratered primersbut primer radius looks good and bolt swipe/lift/stickiness is normal. cratered primers The hornady shot the tightest groups (all 1 moa or better) but the primers on the hornady ammo has noticeably raised craters on the primers. Some time back I had fired some reloads my father in law had given me where the primers were both flattened and cratered. Very aware of pressure sign with that ammo Heavy bolt flat primers cratered primers. 2018-02-06 · So back in April of 2015 I loaded up some . For years, the standard . 5 grains of H869 and you see cratered primers at 110 so you back off to 109. If you reload your cases after firing warm loads, your primers may be loose and unusable. Also it is important to feel the bolt lift. This is why the vast majority do it though I believe it’s the least important. necks, cratered or flattened primers, or punctured cases. 3 (800) 223-8799 • FAX (660) 827-4999 • www. February 11th, 2015, 10:02 AM. com Has any one else seen cratered primers on their ruger american rifles? I have a . Velocity was 2960 FPS, 3001 is published for MAX. a little problem i need input for i have a 32 miller short chambered rifle. Flattened or cratered primers are indicators of high pressure. But the primers on all weren't cratered. As you can see in the pic below i had one punch straight through the primer. Cratered primers are almost always a sign o excessive pressure. The wolf steel primers looked normal, the wolf 120s had an ever so slightly raised crater. They can even be caused by cases having sizing lube left on the brass which prevents the case from the Winchester Primers if you can find them may be a good way to go, they are for both standard and magnum loads. If you see these signs, back off about 1. 5 all the way to 44. Today, I took it out and fired it 10 times, and have some troubles/concerns. Somewhat younger and smaller than my previous subject the 260 Rem, we have the giant-killing 6. Another one broke 3 lugs off his bolt with cratered and flattened primers. The thing is that the loading data that I dowloaded for Winchester's web page only shows maximum charges. Do get a gunsmith to check it out though. Going down on the charge didn't help very much. True ; B. The primers were completely flattened. 4) The result is a flattened primer. Then new avenues pop up, case streaching, breach blocking getting cratered by primers, rabbit trails that don't address the orginal issue. As for cratered firing pin holes and such. Fourth is 2015-11-17 · The point of this is that when I examined the primer (which had fallen out of the case when the bolt was opened) it was not pierced or cratered. Cratered Primers I took my . cratered primersThe theory on flattened primers is that if the pressure is excessive, the primer will An extruded or 'cratered' primer occurs when material from the primer cup is Jul 19, 2016 The primer has a role in this as well, due to the fact our cartridges must . With that said the flattened primers in the . All of them were able to fire AA and PF ammo with no over pressure signs. I had a Contender that would crater 22LR. CCI-400's are quite thin for the 204R. It completely dominates 100- and 200-yard Group BR Shooting. 2018-11-02 · Let me start by saying I have handloaded center fire ammo for may year s. They market their small rifle magnum primers to the AR 15/M-16 shooter or any other semi auto with a free floating firing pin. 5 grains with 85 grain bullet. Has any one else seen cratered primers on their ruger american rifles? I have a . Remington 7600 Cratering Primers . Just make sure the pressure doesn't get out of hand. Journey Of Reloading The 5. _____ Another factor which determines the strength of a primer cup is the work-hardened state of the metal used to make the primer cup. Again, I would not say cratered primers is a high pressure indicator, when seen with other pressure signs, certainly it is but if its by itself, generally its a firing pin and hole dimension issue and unless it really bothers you, can just be left alone. 2018-06-01 · Just traded into a 300 Lapua. 055 inches produce unreliable primer ignition. Actually, it's cratered primers, and blown primer pockets. The first pic is before i sent in my bolt, the second pic is after. Let’s look at SR primers. Washington state is mandating non-tox use for upland hunting in many areas this year. Any of these by themselves may not be indicative of extreme pressures but all of them combined will surely tell the experienced reloader that he has Primer cratering is only one indicator of high pressure, and without actually pressure testing, it's hard to tell. It does this with all factory ammo but is reliable in ignition and has no failures to feed or fire. Note that Hornady says the ammo is perfectly safe to shoot in a semi auto but that one should look for excessive signs of pressure like like popped or cratered primers. "Cratered" primers are usually considered a sign of excessive pressure but can also be the result of an oversize firing pin hole in the bolt, especially if it's happening to different brands of ammo. A change to SRM / BR primers effected a complete cure. My 2 cents. Do not fire the last one or two cartridges just because you have them. I see cratered primers in my Taurus 9mm PT92 as the firing pin hole is overly relieved (see the picture below of a factory load). . Rem 7 1/2's have the hardest cup and will take more pressure than the rest. And many more calibers compatible with the . A normal round from this rifle shows no cratering at all, so the extruded primer is a good indicator of over-pressure. Just check out the spent cases from the magnum primer loads and make sure they're not grossly over-expanded and that the primers aren't flat or cratered. Don't be that guy. It scared the hell out of me. That's about all I can think of now. All the S&B primers cratered, flattened and started moving back out of the case. 308 loads, regardless of powder, that have tended to be most accurate were close to max. Yep. Reading pressure is a required skill that all shooters must have. 223 ruger american ranch and every round I have ever fired has2008-06-03 · Shooting the same load for years, but when I started with the CCI primers, they are SEVERLY cratered. primers are not a good indicator of pressure, especially in small rifle, primers are not primers cratered primers can be caused by a sloppy firing pin hole, an edge protruding around the firing pin hole ect If you do need to switch primers (and this is mostly due to unavailability of your chosen brand), you should start load development again with a lesser powder charge, and build up to the previous load, watching for high pressure signs (cratered primers, difficult extraction, etc. 2 deformed, shows signs of wear such as split or cracked necks, cratered or flattened primers, or punctured cases. S. Cratered primers often result from gun-related problems such as a weak firing-pin spring, an undersized firing pin, or an over-generous firing-pin hole. The factory ammo is Aguila 95 grain FMJ and clocks at 877 fps for an 162 ft-lbs of energy out of the Pico's 2. LOOKING AT YOUR PRIMERS ON SPENT ROUNDS FOR SIGNS OF OVER PRESSURE - HD (L) JIUJITSU2000. particular rifle to see where I could actually go with it before the real signs showed up and thats about where the cratered primers, ejector Pierced primers could indicate a very short chamber or a firing pin issue. ) The next step is loading 2 to 3 different powder charges between the 2 generally most accurate loads. Well and good and sub-moa with this factory ammo. the signature is fantastic. (Hard bolt lift after the shot, deep cratered primers, sticky extraction, etc. Those primers are cratered bad. Some brands of primers are made softer material and some are more stiff. 6 grains. pafoa. Both of my axis cratered primers out of the box. However, I also noticed that the WLRM cases had cratered primers, and that the Large Pistol primed cases' primers were un-cratered. Loose primer pockets in the blazer could definitely be a possibility. 222 cases with 52 and 55 grain bullets. 5 grain differences. 4 grains. The procedure for 2007-07-18 · Hi, I recently started to practce handloading. One thing I have noticed is that a fired round will have a very carboned-up neck with the exception of very close to the case mouth. The good news is they aren't completely flat at the edge and they didn't fall out when you extracted the cases. using 12 grains of 4227 and a federal small rifle primer causes the primers to virtually fall out after firing i checked other small rifle primers and they are all . 470 +/- bolt face. 5X47mm Lapua; 260 Remington; 6. 5X47 Lapua rounds fired in the FN SPR – a rifle bolt issue, not primer cup strength. by pulling the bullets reducing the powder charge down about 2 grs. Please familiarise yourself with the safety aspects and proper procedures for hand loading. It’s currently owned by CBC, which also owns the Magtech brand of ammunition. The biggest factor is the hardness and thickness of the breech face around the firing pin hole and the pressure against it. A cratered primer around the firing pin indent is most likely an undersized firing pin or oversized firing pin in the bolt face. 223 does not do it and neither does the 22-250 both bought recently so I guess if they do it on purpose their quality control does stink. Primer flowed into the firing pin hole yes but if it were a high pressure crater that primer would be flattened. If the firing pin Dec 16, 2013 These signs include very flat primers, slightly cratered primers, ejector marks on the case head, and stiff extraction. amboy49 Even the AA and STS primers can be picked up with a magnet so draw your own conclusions. I didn't check for If it isn't causing any dragging problems or cratered primers, I would not get in a hurry to repair it again. The one customer told me that a tech at Hornady stated they changed the powder due to not being able to to get the powder they normally use but somehow they were able to get the same velocity. 075 inches pose the danger of pierced or cratered primers while hole diameters of less than . Case web growth is probably the most reliable indicator of over-charge. Remington responds to Primer Cratering in Factory Ammo Post by Cadeuses » Sat May 24, 2008 4:37 am The follwing was the answer I got direct from Remington regarding the Primer cratering I found inthe factory ammoI put through my new rifle. See how nice and round the edge of the primer is? That is not a pressure created cratered primer. The bore will be fouling up pretty good by then. Pierced primers are another very good sign of excessive pressures. 256 Winchester Magnum in a Marlin Model 62: Warning! Notes: Test rifle was a Model 62 Marlin with 24-inch Micro-Groove barrel, 1-in-14-inch twist. I believe that the inertia of the heavy firing pin at the end of a long fall, combined with the maxed out spring, and the fit of the pin tip in the bolt face were the reasons for the condition of the primer. ) ===== Question 4. You will have to work up hand loads from now on using primer flatness as your guid rather then primer cratering. If you cannot find the answer to your question below, please click here for contact information. A case that exhibits flat and cratered primers, but no other signs at all, may not be dangerous. Cratered primers and stretching of the case near the base are telltale signs as well as hard extraction. Completely a boltface issue - not at all an ammo issue. All of my primers are cratered, from starting loads to a half grain below max as per the Speer manual. Sticky bolt life is a pressure sign and so is a really shiney case head. Any manuals I've ever seen caution against component substitutions. I have always assumed that it was just an artifact of the firing pin fit and not pressure I load very light for the rifle. This might generate some controversy: a flattened primer (radiused outer edge becomes square) is a sign of excess headspace. Related Articles Thoughts on [Varmint] Load Development by Steve Timm, Varmint Hunter Magazine. Measure the case heads before and after for firing expansion and compare. Nothing like your load. Ill tyre to send pictures tomorrow. 6 grains (. To me, there is not evidence of an over pressure condition shown by those cases. copperheadalaska. I need your advise. primers are becoming difficult to find at a decent price where I live and I can't find anyone where I live to make a bulk purchase from an online dist. Cratered: note the ring of elevated metal around the firing pin indentation. Asking what primers he was using produced the information that it was CCI-400 and Rem 6-1/2 working on the usual advice to stick to standard primers for standard loads unless ball powders were used or other special considerations. They have a slightly oversized firing pin hole that will cause a false impression of over pressure. I would not rely on primer cratering as a means of determining pressure. All these case head signs indicate high pressure, and loads should be reduced until these signs disappear. But that's why it always a little tricky when reading primers - we think we know what to look for but it isn't always clear what they're saying. Cratered primers, erratic accuracy and wasted money were the end effects. involved. Magnum class revolver ammunition loaded with slow powder tends to maintain “silhouette accuracy” within a span of charge weights . Caused by excessive force against Mar 22, 2018 Since there was absolutely nothing on Youtube on how to do this I put together a video on how to bush your bolt. Rifle Round Reloading Guide. Forums Home of PointBlank Ballistics Software. Look at pressure indicators, such as cratered or loose primers and hard extraction. 2 grains, the second went from good-looking primers and easy ejection to locking the cylinder with 14. The magnum primers have the same amount of priming compound as the standard small rifle but have a thicker cup to help preventing slam fires. . I polished inside the receiver and made sure the bolt was not hanging up at all before I learned how to repair CETMEs. 1. Balistix Bullets cannot be held liable for unsafe reloading procedures/practices that may lead to 2010-10-25 · Cratered primers can just as easily be from soft primers rather than high pressure. Even so, I'm not comfortable with cratered primers. php?t=565768Aug 8, 2015 I have a relatively new Rem 700 Stainless LV, . You will get cratered primers with this set up no matter what ammo you use. Thanks for the replies guys. They stick out pretty far now, so much so that when you set them on end they are very wobbly Look at the primers. I have my fingers crossed but so far with standard thickness primers and reloads none of the primers have ruptured around the firing pin even with warm loads. JIUJITSU2000. Cratered primers are not a reliable sign because some are softer than others. None of the 100 rounds I fired showed any evidence of excessive pressure, no cratered primers, no primer leaks or blown primers and no shiny spots on the base of the case. They are aware that their Superformance line builds to much pressure in some rifles. 41grains of H-4831sc seems to be the absolute maximum limit as it exhibits cratered primers. I gave an opinion, so that's it. i accidentally overloaded it once using speer grand slam bullets (according to a. Know the indicators of headspace and chamber pressure and report any information that give you cause for concern. Buy Armscor USA 10mm AUTO Ammo 180 Grain FMJ at Target Sports USA with free shipping available. cratered primers, fired primer, fired primer images, fired primer pictures, firing pin hole too large, pictures of normal fired primers rifle, primer crater, primer cratering, reading cartridge primer, reading cartridge primers, reading fired primers, under pressure fired rifle cartridge Those "cratered" primers are getting there as well. Same exact load using regular small pistol primer was perfect. Very good condition and is extremely accurate. You should be able to reload the Lapua cases at least eight to ten times if your pressures are within acceptable limitations. Look for marks on the brass, bulging or cratered primers, anything unusual. If your response to cratered primers (high pressure signs) is to use a tougher primerid respectfully say a review of your loading practices might be in order. Good morn all. 5gr increments loaded up all the way to 49. One of the ones I bought were Sellier and Bellot soft points. Primers were starting to show some minor flattening but they weren't flat and brass looked fine although it was from a well supported KKM. 5 and still see craters. ] Valid Pressure Signs You Should Understand So what are valid pressure signs? This is exhibited by the movement/marring of the head of the cartridge case, cratered primers, flat primers, ripped or ruptured cartridge cases, “popped primers”, and/or any combination of these effects. 224 bullet selection, cartridge merits, and offer some favorite 22BR load recipes. This is a discussion on Cratered Primers within the Maintenance forums, part of the Firearm Forum category; I recently (March 30) bought a P89 pistol. Federal primers are soft, and will flatten more than other brands with everything else being the same. To check if I overloaded I should look for cratered primers. Check your resizing setup. DO NOT UNDER ANY CIRCUMSTANCES USE OLD OR RELOADED AMMUNITION PURCHASED AT GUN SHOWS, ESTATE SALES OR AUCTIONS. I don't see cratered primers in the original post nor do I see flattened primer edges. Great article! What difference would Magnum primers make? In South Africa, our sole powder manufacturer (Somchem), provides load data, but only with CCI 250 primers Let’s look at SR primers. and no cratered primers. By the time you're getting stiff bolt lift or cratered primers with fresh brass you've exceeded proper pressure levels. I did pull the bullets, change powder type , switched to BR-2 primers & used a slightly different lighter bullet + group size was about 1/2 of previous original load. I was loading 40sw for a Beretta 40 cal carbine and with 124 grain truncated cone moly coated black cast bullets and AA#7 I was able to get a significant increase in velocity without cratered primers or hard ejection. 5mm Trio. BULK RATE U. Spews XDTalk 100 Member. The former can be a sign of mild overpressure loads. I doubt you will get the "cratered" look with just firing the primer. Bolt opening and extraction were effortless in all loads tested. Cratered primers can just as easily be from soft primers rather than high pressure. back off if you see that and pull and salvage any such remaining loads Nov 13, 2013 #7 sterzenbach By the time you’re getting stiff bolt lift or cratered primers with fresh brass you’ve exceeded proper pressure levels. I have noticed before with that type of ammo that the primer pocket would look chared. Needless to say, I stopped. 223 ruger american ranch and every round I have ever fired has had a rounded crater on the primer. STOP when any load begins to exhibit high pressure signs. 5 to 2 grains of powder. Original RWS Berdan primed factory ammunition I’ve seen was loaded to near maximum pressures and fired cases exhibited flattened, and sometimes slightly cratered primers. One problem I can't seem to correct is that it craters primers, with all loads. If they are flattened or cratered, you may well have overpressure. Enjoy great deals on all 10mm Auto Ammunition for sale Cratered primers used to be thought a reliable indicator. It takes enough chamber pressure to push the case head hard up against the bolt face. 5" at 100 yards. High pressure signs would include; an increase in case head expansion, hard or sticky extraction, flattened primers, severely cratered primers, ejector marks on the case head, enlarged primer pockets, and primers falling out of cases. Loads out of Lyman manual with Fed 209A primers leave primers cratered around the firing pin strike. The mid-size 6. For instance, the "upgraded" DPMS "GII" in . It's just how they are. Great article! What difference would Magnum primers make? In South Africa, our sole powder manufacturer (Somchem), provides load data, but only with CCI 250 primers for 6. 222 cases with 52 and 55 grainM1A TM RiflE REviEw ThE SAfE hANDliNG RUlES pRioR To EAch USE www. Cratered primers and a few stuck cases. tened primers, cratered primers and especially extrusion of the case head into the ejector pin hole in your reloads; these are all indications of unacceptable pressure. 56mm ammo, and fired cases showed unmistakable signs of high pressure (flattened/cratered primers, with some showing gas blow-back from around the primer cup — on crimped primers!). Rifle works with SA ammo and is a joy to shoot. NEVER assume pressures will be safe if you change lots or ANY component. Measuring the expansion of the case just above the case web is also another indicator, but there is some debate about that one, too. So what causes flatten primers? I hear its excessive pressure but I bought these "reloads" from a indoor range and I shot them. I ´ve been using Winchester 748 powder to reload . One more thing. This has also been referred to as headspace. I am not suggesting super heavy pins Examine each series very carefully watching for excessive pressure symptoms such as a combination of cratered primers, flat primers or even a slight hitch in the bolt lift. com/forums/showthread. It also recommends turning the gas system down to limit the amount of gas bled off to operate the action. 5 had pressure signs of sticky bolt, ejector marks, and cratered primers. These included flattened and cratered primers, although the cases themselves have never experienced sticky extraction. Anyway, The primers are slightly cratered. Wolf primers came on the scene a couple of years ago. The primers popped out …M1A TM RiflE REviEw ThE SAfE hANDliNG RUlES pRioR To EAch USE www. Yeah buddy, sounds good. The cratered primers are a bit worrisome, but I do not see a ejector mark. alphin) but had no extraction problems or cratered primers. As others have said, cratering can be because of the firing pin tip shape, play around the firing pin hole in the bolt face or other reasons. YMMV Dec 25, 2012 #9. Hence these indicators may be misleading. First, There are PLENTY of pressure signs in that first picture, on the first 2 loads, flattened and cratered primers along with ejector marks. If the fired primer looked to be flattened enough to be flush with the edge of its pocket, and the indent of the firing pin was cratered around the edge, that meant it was a hot load. So , maybe some Primers on these Rifles are popping out because of the Rifles Chamber & or Bolt design. Next to it is a Federal blue for reference. I was getting 3100fps and very stiff bolt lift and cratered primers at 70g's. I’ve owned two different domestic-made break-open . A blown primer is major suckage. Even in rifles I have seen loads that show cratered flattened primers, but no ejector swipe while othe loads look they have perfect primers and horrible swipe marks. First is cratered primers, although this is not infallible. USE OF THE M1 GARAND Flattened primers Cratered primers Ejector imprints on case head Difficult case extraction Severe recoil NOTE: Stop shooting the load that show above signs and revert to a lower load instead! Disclaimer • Please familiarise yourself with the safety aspects and proper procedures for hand loading. Unfortunately it also gave me cratered primers on 15 of 20 rounds and pierced the primers on the other 5. He assured me must be something wrong with the gun so I took it to a gunsmith and had it head spaced and chamber checked. For those loads listed where a starting load is not shown, start 10% below the suggested maximum load and then approach maximums carefully, watching for any sign of pressure (difficult extraction, cratered and flattened or blown primers, and unusual recoil). This typically results in powder charges with 0. 308. No flute damage on shells from exessive pressure, no blown or cratered primers. Shotguns don't show overpressure signs like rifles - no cratered primers, no flattened primers etc. The thing is that the loading data that I dowloaded for Winchester's web page only shows maximum charges. If the firing pin spring in your rifle is too weak, or if it is the wrong diameter, or if the firing pin hole is too large you will also get cratered primers. The cratered primers are from excess play between the bolt and firing pin. primers and have >2000. I recently started to practce handloading. Like Wambli said, probably an oversized firing pin hole, and if so that's a good reason not to hot rod it. 308 Win I posted awhile back about a new rifle I had won in a raffle, a Remington 7600 chambered in . Second is primers that are flattened, or are bashed so flat that they fill the primer pocket. Hole diameters of greather than . Cratered firing pin mark (a little ridge around the firing pin indention in the primer) Ejector swipes (shiny spot on the back of the case head) There's probably a reason why Winchester primers are some of the cheapest ones out there. 1 grains of Blue Dot. I like the Wincherster ones. Just did some research- looks like OATH closed its doors sometime mid to late last year. One issue with the 47L is cratered and pierced primers, you will get cratered primers at almost any loading so do not be scared if at a low loading you get craters. I bought 1000 Cheddite primers back when I was reloading on a MEC Sizemaster. Let’s look at SR primers. I had some H1000 laying around and seeing your load sparked me to do a little testing of my own. In a bolt rifle, case wipe on the bolt face is also an indicator of not only overpressure but headspace issues as well. Never start with the maximum load listed. If not, the above explanation is the most plausible. 327 Federal Magnum. I havent had any primers pop out completely, yet. The LVSF 700 I got last year cratered big time but then the extractor broke so Greg Tannel fixed both issues. 5 and 6 Creedmoor tests. I haven't read my reloading manuals in a while but I remember a suggestion that cratered primers in a light load can be a sign of a case that fits loosely in the chamber. The primer is pushed back into the firing pin . www. Find out why Close. That makes sense. A primed case is placed in a fixture with the appropriate chamber that has a movable firing pin also of standard dimensions. The root cause of this is from excessive clearance between the striker and the hole through the bolt face. com with permission from the author Trent — over on The Technical Newsletter From Your Ballistic Technicians Volume 6, No. I’ll be starting at 4. I called Ruger, got an RMA number and FedEx label, shipped it on a Wednesday and had it back in under 2 weeks. Ol' Buffalo Reloading Guide includes definition of reloading terms, equipment guide, safety, step-by-step reloading instructions, tips for better accuracy. If someone sells you a custom rifle and tells you that the accuracy load is around 110. Yesterday, I blanked a few primers shooting a load I had shot many times before, and even popped a couple primers which caused me to stop shooting. Still think the squashed case mouth is from hitting the back of the ejection port. php?t=278555Mar 12, 2015 Re: Cratered and Flat Primers. com www. It had cratered primers, severe marks from the extractor and had a tell tale bulge like pic #4 in the link. I couldn't ever tell if it was peirced though. This is a safe and reliable process that has been proven hundreds of times. Don't assume cold weather loads are safe in summer. I sent an email off to Hornady, but have yet to receive a reply. 2 Neck Sizing Length. Try CCI-450, Rem 7. Not so with the Winchester brass. 020”/0. It proved to shoot accurately with 50 grains of IMR 4350 pushing 100 grain Hornaday softpoints. It seems Remington should have the ability to build a problem free bolt by now. Flat and cratered primers are not the exact word on excessive presure. 308 Winchester. Tests in the laboratory and production experiences have shown that, when deposited at sufficiently high voltage, e-coat primers form rough, cratered films on zinc-rich coatings. I still can't get much above starting loads with 120 grain bullets and anything fast (H4198, etc) will give me pressure signs (cratered primers) very quickly, even with 100 grainers. With WLRM and CCI 250 primers, sticky bolt and cratered primers went away with the same powder charges. The presence of a cratered primer does not automatically mean you Dec 23, 2012 LOOKING AT YOUR PRIMERS ON SPENT ROUNDS FOR SIGNS OF OVER PRESSURE - HD (L). Whether you get a crater on your primers has as much to do with the machining of the boltface as it does with pressure. I didn't even think about that. That tells me the pin protrusion is ok. Any heavier powder load resulted in difficult extraction with flattened and cratered primers. The load was a med load of H4831 42. This is used where rifles are giving cratered primers or piercing the primer at low pressures, weak fing pin springs can also be involved. com DO NOT ATTEMPT TO LOAD YOUR M1A UNTIL YOU HAVE READ THIS MANUAL! Two points to bring up - reading primers is not a reliable indicator of pressure. I decided to go whole hog and use the 12. A call in to DPMS and they will replace the bolt. Remember some posting here about Cratered Primers with the GII , probably due to the fit of the Firing Pin & its Hole in the Bolt . 223 rifles that would not extract or eject empty cases when fired with 5. Once I was loading for a Rugger 77 in 270 for which the max load for a particular powder/bullet combination was the starting load listed in the manual for that rifle. 9 that my primer's were slightly cratered, as compared to my last ladder (36-42. Two things however, careful not to cut through the plating with a roll crimp. 308 Winchester match handloads that were definitely not too hot because the chronograph data was quite normal and consistent. 223 Rem. 5mm Hornady Creedmoor. Winchester primers looked normal and the load double checked correct. The primers did feel like they went in very easy. The only time I've seen cratered primers in the . Every Winchester LRP I've shot appears to be flattened, even a full 2 grains below published max. It looks like the "fix" made the problem worse. Here is what I did to cure the problem. sierrabullets. Cratered primers? The OAL on these is slightly longer than the factory Hornady rounds with the same bullet. I find the recoil fine, because of the great stock design (some say ugly stock). Whenever you buy new powder, even the same brand, start 10% low. I have not yet seen a pierced primer. All worked fine with good accuracy, but when I looked at the primers, I noticed cratering. So, the rifle was simply re-chambered to the LRP-equipped 260 Rem cartridge and the problem was solved. Working on steel shot loads. What wasn't pierced were cratered like you see in over pressure conditions. First step was to zero my Weaver 4 X 16 on my 10" Contender Hornet barrel at 50 yards. 5 Great article! What difference would Magnum primers make? In South Africa, our sole powder manufacturer (Somchem), provides load data, but only with CCI 250 primers for 6. No other pressure signs (ejector marking, flattened primers). Some of this could be due to differences in the individual chamber dimensions, but because Remington’s bolt action is stiffer and stronger than the break-open Contender, I would expect similar 0 July-August 1972 23 What Causes Leaky Or Cratered Primers? While shooting some handloads recently, I encountered a couple problems: leaky and cratered primers. You will still need to watch things as s4s4u said anytime you change a component it changes things and as I've mentioned on the forum before I read a study a few years back where they changed primers in some different loads and they found pressure differentials of anywhere from a Sellier & Bellot, operating since 1825, is the oldest engineering company in the Czech Republic, and one of the oldest continuously operating companies in the world. If you're not getting your primers seated completely, they can flatten when you fire the round giving you false pressure signs. Don’t assume cold weather loads are safe in summer. Out at the range today working on handloads for a new 300 WM (New model 70). Loose primer pockets in – Cratered primers – Ejector imprints on case head – Difficult case extraction – Severe recoil; Note: Stop shooting the load that show above signs and revert to a lower load instead! Disclaimer. Cratered primers with some serious metal flow into the firing pin hole. I don't think the problem is with the gun because I would expect the rest of the brass to look cratered as well. Yikes! Even though they were only 3 rounds each, they grouped horribly. 25-1. Winchester-Western cases, unprimed weighing 82. 264 Win Mag in a new Remington Sendero II. Now I have a MEC Automate and they would fit, but after reading some of the comments here, I think I'll stick with CCI 209 primers. The latter is a sign of nearly ruining your gun. ARMSCOR cases all looked normal. Since there was absolutely nothing on Youtube on how to do this I put together a video on how to bush your bolt. Accuracy was about 1. 5 or similar thick walled primers. Good luck and happy shooting! cratered or blown primers in the Contender showed no pressure signs at all in Remington. The gun functioned fine but when I picked up my brass and started looking at them the primers were cratered badly (overpressure?) I stripped the gun and tried a few fired cases in the chamber with the barrel in my hand and they slide in and out easily, no other pressure signs I can see with my novice eye. Both 61 and 61. I mentioned this before but it's worth repeating. 5mm of the neck in front of the case shoulder. Bushing the Rem 700 firing pin hole and turning the tip to a smaller diameter. I tried a total of 15 from 10 manufacturers, with a 16th as the aforementioned follow-on which became available after the others were In parts 1 and 2, I’ve got as far as listing the primers that are generally available in the UK and summarising their characteristics – in particular, cup 2018-06-01 · Just traded into a 300 Lapua. 308). Its hard to describe how much is too much, it is a, "you'll know it when you see it" type of thing. I know this statement is going to attract ridicule but I was much younger then Back to the rounds I'm discussing now,there is no cratering around the firing pin hole and there is no signs of the primers being flattened. All these case head signs Feb 25, 2018 This is a discussion on primer cratering with hmr within the Reloading forums, part of the Sniping Related category; I have a bergara hmr in 6. Quite a few years ago, I must have gone wild and bought a bunch of CCI LP Mag. Discard the cases once they show any indications of Jerry- I worked up to 70g of H1000 before I ran into very high pressures. The Fiocchi and even more so the Rem 7½BR ‘cratered’, neither by enough to cause real concern; the thin-cup Winchester WSR flattened considerably but neither ‘cratered’ nor ‘blanked’. Certain mechanical issues that cause primer craters can also cause primer piercing -- a serious safety problem that needs to be addressed. 470 +/- bolt face with no more pierced or cratered primers. In all, three Patriot models were manufactured between 2008 and 2011. When I regrouped my thoughts and loaded the cartridge for the purpose that it was intended for, I got the results I should have been looking for in the first place: accuracy, and great field performance. I am convinced that Large Rifle Magnum primers are the way to go if accuracy is the end result. Loose primers (eg - primers that fall out), or blown primers is the next level of trouble. It could simply be primers with a thin cup that need to be replaced with primers that have a thicker cup. A relatively frequent complaint with M700 and Accuracy International actions (and others) are cratered primers with factory made ammunition. 4oz unloaded, may be a bit heavy for some to carry all day. 357 mag case are still probably a sign of it being slightly hot. (Cratered primers are not a I've discovered that cratering of shotgun primers is not as reliable a predictor of high pressure as rifle and pistol primers. cratered primers picture, cratered primers pictures, flattened primers, photos of flattened cratered primers, pics of pressure signs on pistol primers, picture of cratered primer, picture of cratered primers, pictures of primer cratering in 9mm, and the cause, reloading cratered primers, signs of high pressure with primers, symtoms of cratered For example, Federal primers are kinda soft and tend to crater and flatten quite a bit even at safe levels. 5 grains gave me cratered primers so I stopped there even though I had 0. I only use a single-stage press and 9mms are no different than any other pistol caliber. ) and verifying that the change hasn’t degraded your accuracy. I have Bullseye, PB, Herco, A#9, 2400, and IMR4227 that I have loaded in this caliber. 2012-07-22 · Thanks for the replies guys. I have been trying to work up a load for my . In conjunction with these measurements, case head signs of pressure should be monitored as well. freightercanoes. Great article! What difference would Magnum primers make? In South Africa, our sole powder manufacturer (Somchem), provides load data, but only with CCI 250 primers for 6. The Tula primers are a little flat, but some primers do that even when loaded to normal working pressures. Got a box of the new bullets and loaded up a couple of dozen to see how they’d do on the range. Feel for sticky bolts, look for cratered primers, flattened primers – all the usual high pressure signs. That was enough reason to quit using Cheddite for me. No more pierced or cratered primers. I started breaking it in with the 2 odd ball lot. The box was too wide to easily dispense the primers into the primer tray. Just traded into a 300 Lapua. the recoil causes it to shed the front sight hood. How much of an issue is this? Do Sellier and Bellot have soft primers or do I have an issue with the gun? The gun was headspaced by a gunsmith who said it was good. 5x47mm Lapua with a 4mm shorter case, nominally 47mm/1. 72 grains h4198 300 gr fury smooth sized All modules had 3 firings on them. People Online: Members: 0 Visitors: 183 BOT: 1 Total: 184 Those are fired primers. Due to the known formation of the “dreaded doughnut”, it is strongly advisable not to resize the 0. The blown primer in the picture failed in the cratered portion not in the firing pin dent. As mentioned above, start well below max and work up to max, watching closely for cratered primers, bulging, etc. Ambient temperatures and seating depth can alter pressures considerably. No case stretching noted. Got into the other lot, in the first 10-15 I was seeing some pierced primers and this lot wasn't supposed to be as hot as the first lot. Fired primers with the ‘hot’ 8208 XBR load. Extruded Primers An extruded or 'cratered' primer occurs when material from the primer cup is forced back into the firing pin hole in the breech face during firing. The Charter Arms Patriot was a short-lived line of revolvers chambered for the . The new gen1 barrel I received is dimensionally equal to the gen2 with the exception that it has, or had, a very tight chamber until the hone and polish was done. Once again the Beretta prevailed. This outstanding high pressure rated matched bolt and firing pin from Rubber City Armory is specifically designed to reliably handle 260 Rem, 6. 5gr. In parts 1 and 2, I’ve got as far as listing the primers that are generally available in the UK and summarising their characteristics – in particular, cup thickness/strength. Those Ejector marks on the cases may be the result of some type of lube in the chamber. 0 grains of 4831 powder for a 130 grain bullet. Watch for pressure signs, like cratered primers, flattened primers and stretched case heads. Have your firing pin bushed if you are getting pierced primers. Unless you have additional info that it may be a warm load, disregard cratered primers. I've only managed to blow one primer pocket in all my years of handloading. Third is difficult extraction. Before I swapped anything I'd go to the powder manufactures website and look through the load data. 5 under my previous start) for the Remington 7 1/2 and the CCI military primers (which are by some reports “hotter” than normal primers). Cratered primers in an Encore/Contender usually occur because of a weak firing pin spring. I had flattened and cratered primers. Cratered primers can be caused by a worn/oversized firing pin hole. 205 primers with all loads. 5 Creedmoor, 6mm Bench Rest, 22-250 and many more calibers compatible with the . 270 Winchester load was 60. Another propellant I would avoid with heavy bullets is RS52. Kelley O. Don't be too worried if you start seeing pressure steadily climb as you approach 20 rounds. 308 caliber has produced many, many, negative reports for "cratered" primers since its release. YouTube Premium Loading Get YouTube without the ads. Check to see if the primer pockets are loose in those cases when you reprime them to see for sure. This means extraction difficulty (however slight), flattened primers, cratered primers, ironed-out headstamps, polished headstamps, ejector marks, case-head expansion, and excessive recoil and muzzle blast. Ladder H1000- The only published data I could find for 160gr was for the Partition at 63 MIN and 66 MAX. The brass had expanded so much you could not even see the carbon marks from the fluted chamber. The primer in the photo above is from a neck-sized . Avoid piercing primers or you'll start to erode the FP which will lead to poor FP strikes and more piercing with even hard primers. Re: Remington 700s and Cratered Primers? This is a good solution. 85” length (Figure 1). Sure, a small group won't tell you if you have a good load, but it can certainly tell if you have a terrible load. Also primers looked a bit flat and several were definitely cratered at the firing pin indentation. The primers popped out a little bit with M1A TM RiflE REviEw ThE SAfE hANDliNG RUlES pRioR To EAch USE www. I don't think the problem is with the gun because I would expect the rest of the brass to look cratered as well. Cathodic electrocoat primers (e-coat) have been adopted by automobile manufacturers worldwide due to their advantages with regard to application and corrosion resistance. 0). True or false: Cratered primers are a sure sign of excessive pressures. Have a old stock in dire need of a “make-over”? Have you recently purchased a laminated wood stock that needs a finish, or a fiberglass stock that you want to customize?An airless spray system operating at high fluid pressure, typically 300-400 PSI, that uses a small amount of air to help shape the spray fan and eliminate the spray tails at the top and bottom of …Simply select a category and then click the "Answer" button next to the question for information on that topic. I get as well cratered primers on factory ammo. Cratered and one ‘blanked’ Remington 7½BR primers in 6. Re: Cratered and Flat Primers Excellent explanation and pictures! I am sure I will get flamed for this but my personal take on primer signs is a little more conservative. Sometimes it's good to let the gun stretch its legs to see what it will do, even if the loads won't see any use 99% of the time. If you do decide to try the 185 or 190gr bullets, I would strongly advise you to switch to N150, which was specifically designed for heavier bullets in . These high-pressure indicators were not present when firing these rounds from the S&W. If you are cratering primers try using harder primers (WIN seem very soft these days, FED seem much harder). org/showthread. In the first gun I got cratered primers at 15. 1st, no slight intended for seller of the rifle. Sometimes other factors cause this. Primers can be too sensitive, which could pose shipping problems, so there is an industry standard test for primer sensitivity. I'd advise a bit of caution. 38 spl is with very light loads. com How Accurately Will My Firearm Shoot?Rifle Round Reloading Guide