eldorado0456 Posted April 6, 2020 Share Posted April 6, 2020 Anyone ever have a bad batch of primers do this? Sent from my SM-G960U using Tapatalk Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted April 6, 2020 Share Posted April 6, 2020 Any additional info you could provide, like gun, powder, bullet, OAL, how much powder, what kind of primer ? I've never seen anything like that - don't know where to start. More info might be helpful. Link to comment Share on other sites More sharing options...
eldorado0456 Posted April 6, 2020 Author Share Posted April 6, 2020 Atlas custom open gun 9mm major. 6.5 gr WAC1.61 oal Federal small rifle primers. Same load I have ran for years in my other open gun no issues. Best guess is a bad batch of primers Sent from my SM-G960U using Tapatalk Link to comment Share on other sites More sharing options...
usmc1974 Posted April 6, 2020 Share Posted April 6, 2020 I had that happen from brass in my 6.5 Creedmoor rifle. They told me it's not the primers, it's worn out loose pockets. Link to comment Share on other sites More sharing options...
CHA-LEE Posted April 6, 2020 Share Posted April 6, 2020 (edited) Are you reloading this random 9mm brass after shooting it at Major PF speeds? If so, that is your problem. In 9 Major the first part of the brass that starts to fail are the primer pockets. The best advise for 9 Major shooters is to NOT reload brass that has already been shot at 9 Major velocities. Its a "Once and DONE" situation. 9 Major is "Cheap" until it isn't............. There is a reason why all of the top Open shooters are using 38 SC. This is one of them. Edited April 6, 2020 by CHA-LEE Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted April 6, 2020 Share Posted April 6, 2020 9 hours ago, eldorado0456 said: 6.5 gr WAC 1.61 oal If that's with a 124 gr bullet, it most likely doesn't make Major. Mine takes 7.2 gr WAC with a MG 124 gr JHP at 1.6" Link to comment Share on other sites More sharing options...
MikeBurgess Posted April 6, 2020 Share Posted April 6, 2020 10 hours ago, eldorado0456 said: Atlas custom open gun 9mm major. 6.5 gr WAC 1.61 oal Federal small rifle primers. Same load I have ran for years in my other open gun no issues. Best guess is a bad batch of primers Sent from my SM-G960U using Tapatalk 30 minutes ago, Hi-Power Jack said: If that's with a 124 gr bullet, it most likely doesn't make Major. Mine takes 7.2 gr WAC with a MG 124 gr JHP at 1.6" May not be enough pressure to seal the rifle primers? For me rifle primers are a solution to a non existent problem, if you are having excessive primer flow with pistol primers then you are running very high pressures, there are more than enough powders on the market now to be able to build a nice major load that will work just fine with regular pistol primers, there is no reason to run loads that need rifle primers. Link to comment Share on other sites More sharing options...
TONY BARONE Posted April 6, 2020 Share Posted April 6, 2020 I"ve loaded over 300,000 rounds of 38sc with small rifle primers but not with any Federal and never had a problem until recently with a batch of Winchester small rifle that ruined my breech face.It only took 20 rounds to make pitting around the firing pin hole. Luckily Clark was able to repair it for me. I would not discount bad primers. I am now trusting CCI small rifle primers. CHA-LEE has a lot of experience but why did the primers fracture. Link to comment Share on other sites More sharing options...
eldorado0456 Posted April 7, 2020 Author Share Posted April 7, 2020 I agree bad primers I run this load in multiple guns and it works fine. It only happened one time with that particular batch of ammo. Sent from my SM-G960U using Tapatalk Link to comment Share on other sites More sharing options...
Ming the Merciless Posted April 8, 2020 Share Posted April 8, 2020 Hard to tell from the breachface photo, but the firing pin looks pretty chewed up. From the look of the primers, it could be a combination of bad firing pin tip piercing primers and loose primer pockets. Link to comment Share on other sites More sharing options...
NuJudge Posted April 18, 2020 Share Posted April 18, 2020 The gas is getting around the primers. One sees this more often with rifles, where the primer pocket has expanded due to soft brass or hot loads, and the brass should have been retired earlier. Link to comment Share on other sites More sharing options...
falconpilot Posted April 26, 2020 Share Posted April 26, 2020 (edited) Found this on my Atlas Custom Open 9 this evening...about 5000 rounds through it - I've put 2500 rounds on it since I bought it - Tula Small Pistol Mag primers 7.2 grs AutoComp 124 MG at 1.165 Federsal brass 173'ish Power Factor.. Edited April 27, 2020 by falconpilot Link to comment Share on other sites More sharing options...
falconpilot Posted April 27, 2020 Share Posted April 27, 2020 I never shoot 9 major twice..so I went back to my practice range and picked up some to look at primer and primer pockets - primers look great, but every single case has the black mark on rims..thoughts?? Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted April 27, 2020 Share Posted April 27, 2020 Guess it can't be too little powder since you're getting 173 PF, but that black on the cases sure looks like too little powder. Don't know what else it could be. Link to comment Share on other sites More sharing options...
TONY BARONE Posted April 27, 2020 Share Posted April 27, 2020 Sad looking breech face maybe you did not find the suspect cases as those look good other than the blackened part of the case, mystery. Link to comment Share on other sites More sharing options...
CHA-LEE Posted April 27, 2020 Share Posted April 27, 2020 (edited) 23 hours ago, falconpilot said: I never shoot 9 major twice..so I went back to my practice range and picked up some to look at primer and primer pockets - primers look great, but every single case has the black mark on rims..thoughts?? I wonder if that is due to the recoil & hammer springs being too light and its causing the barrel to unlock and extract the case while powder is still burning in the barrel. The black soot on the side of the case usually happens when the round is firing when its out of battery. Blow back PCC's are a very good example of this scenario. What is your Recoil and Hammer spring setup? Edited April 27, 2020 by CHA-LEE Link to comment Share on other sites More sharing options...
falconpilot Posted April 28, 2020 Share Posted April 28, 2020 I went back to range and picked up several hundred rounds of brass...my range...All I’ve shoot in this gun is 7.2 WAC and Tula Small mag primers..all my brass looks like the brass in this picture...I’m second owner..bought pistol from guy I know..he had it built, and put about 5000 round through it...I’ve fired about 2000. The hammer spring is as it came from Atlas. First owner had played with spring some..I had just put new Wolf 8 lb spring..the spring that came out was stacking by about one coil.. Link to comment Share on other sites More sharing options...
falconpilot Posted April 28, 2020 Share Posted April 28, 2020 (edited) What I can’t figure out is why every piece of brass has the black carbon marks in exact same place...where the crack is showing..all the marks are starting is same place under rim, moving around and up the rim..they all start right at extractor claw mark.. Edited April 28, 2020 by falconpilot Link to comment Share on other sites More sharing options...
CHA-LEE Posted April 28, 2020 Share Posted April 28, 2020 Send it into Atlas for a once over. Link to comment Share on other sites More sharing options...
falconpilot Posted April 28, 2020 Share Posted April 28, 2020 They’ll have it in morning.. thanks for your help.. Link to comment Share on other sites More sharing options...
yigal Posted April 28, 2020 Share Posted April 28, 2020 On 4/27/2020 at 2:44 AM, falconpilot said: Found this on my Atlas Custom Open 9 this evening...about 5000 rounds through it - I've put 2500 rounds on it since I bought it - Tula Small Pistol Mag primers 7.2 grs AutoComp 124 MG at 1.165 Federsal brass 173'ish Power Factor.. what is the sign on the slide under extractor? i hope it's only dirt . Link to comment Share on other sites More sharing options...
falconpilot Posted April 28, 2020 Share Posted April 28, 2020 It’s only junk..didn’t pull extractor and clean Link to comment Share on other sites More sharing options...
sauza45 Posted April 29, 2020 Share Posted April 29, 2020 (edited) I am not sure but it looks like a crack under the extractor on the slide. It also looks like the breach face is peening over on the bottom. Edited April 29, 2020 by sauza45 Link to comment Share on other sites More sharing options...
yigal Posted April 29, 2020 Share Posted April 29, 2020 3 minutes ago, sauza45 said: It also looks like the firing pin stop is to long and peening over when the hammer hits it. Link to comment Share on other sites More sharing options...
sauza45 Posted April 29, 2020 Share Posted April 29, 2020 Sorry brain fart, thinking of one thing and doing another. Link to comment Share on other sites More sharing options...
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