shooterclay Posted June 26, 2016 Share Posted June 26, 2016 I have just started seeing a ring around the firing pin hole and one small pit in my 9 major open gun. Is there any particular primer that deals with primer flow better than others? Link to comment Share on other sites More sharing options...
ChuckS Posted June 26, 2016 Share Posted June 26, 2016 Is the ring the same diameter as the primer? Link to comment Share on other sites More sharing options...
shooterclay Posted June 26, 2016 Author Share Posted June 26, 2016 Appears to be. Link to comment Share on other sites More sharing options...
ChuckS Posted June 26, 2016 Share Posted June 26, 2016 Small rifle primers? Link to comment Share on other sites More sharing options...
shooterclay Posted June 26, 2016 Author Share Posted June 26, 2016 I'm using federal small pistol, match grade small pistol, and some cci small pistol primers. Sent from my SAMSUNG-SM-G870A using Tapatalk Link to comment Share on other sites More sharing options...
ChuckS Posted June 26, 2016 Share Posted June 26, 2016 I have seen the BFE on 9 major guns using rifle primers. Heck, I got it on my limited gun shooting major 40 using federal magnum primers during the dark days of 2008. The Federals you are using should seal just fine. Not sure about the CCI as I have no experience with them. Link to comment Share on other sites More sharing options...
teros135 Posted June 26, 2016 Share Posted June 26, 2016 I got BFE (big time) on my .40 custom 2011 using mag pistol primers, but none with SPP. In Open (2011) doing just fine with SRPs. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted June 26, 2016 Share Posted June 26, 2016 Hello: I use Winchester small rifle primers and have for years. No erosion at all. I think part of it maybe that I seat my primers very deep. Actually flattening the primer some. This may cause it to seal a lot better. I have never noticed that the primers had any blow by---ever. I am shooting major 9mm, 40 major and minor, 45acp and 38spl and 38 super/comp. Thanks, Eric Link to comment Share on other sites More sharing options...
Flatland Shooter Posted June 26, 2016 Share Posted June 26, 2016 When primers were hard to find, I loaded some 9 Major loads with Federal SPP. Within 500 rds I saw small ring of erosion around the firing pin hole. Switched back to Winchester SRP and the erosion did not get worse. Others reported erosion on their slide attributed to using SRP on minor loads. Not enough pressure to seal properly? Link to comment Share on other sites More sharing options...
BeerBaron Posted June 27, 2016 Share Posted June 27, 2016 fed SPP and SRP are basically the go to primer for competition loads in both minor and major and 9 and 38 super. they are quite soft and should seal very well. do you have any un-usual marks on fired primers? primer flow? piercing etc? how many rounds on that slide. Link to comment Share on other sites More sharing options...
shooterclay Posted June 27, 2016 Author Share Posted June 27, 2016 Flat primers but no other signs on the primer. 6500 rounds on this slide. Sent from my SAMSUNG-SM-G870A using Tapatalk Link to comment Share on other sites More sharing options...
Sarge Posted June 27, 2016 Share Posted June 27, 2016 Another reason to stick with SRP in open Link to comment Share on other sites More sharing options...
BeerBaron Posted June 28, 2016 Share Posted June 28, 2016 I agree with you on that sarge (I use fed SRP) but there is generally a camp that will say the opposite which is that if your load is not hot enough (no one knows what 'hot enough' exactly means) that the SRP don't seal the primer pocket as well as the SPP do and that causes breach erosion. Now this argument falls over a little given the fact that all primers are different. I'd wager an S+B SPP has a harder cup than a fed SRP. Flat primers will the fed SPP is not uncommon and not really a worry till you start getting nasty stuff like bad primer flow, cratering, piercing etc. Second question are you sure it's really breach erosion and not just some marking that can be cleaned/scraped off? 6500 rounds is to me no where near the kind of count that should have any visible wear signs in the slide. Link to comment Share on other sites More sharing options...
shooterclay Posted June 29, 2016 Author Share Posted June 29, 2016 The last time I cleaned it- a week ago I noticed what looked like a short hair line going across the area where the primer hits the breach face. I ran a stainless dental pick across it and it would hang up in it. I wasn't sure if it was a scratch or a crack, it's very small and doesn't show up when I take a pic of it. I'll just keep a eye on it. Sent from my SAMSUNG-SM-G870A using Tapatalk Link to comment Share on other sites More sharing options...
1911A12011 Posted July 4, 2016 Share Posted July 4, 2016 I would recommend you use Winchester Small Rifle Primers and once fired brass. I've seen errosions on some 9mm major open shooters using soft primers (due to high pressure). Link to comment Share on other sites More sharing options...
JD45 Posted July 4, 2016 Share Posted July 4, 2016 I shot a near stock .45 in major L-10 for years. I happened to look at the breechface one day and it has a complete circle of pinholes around it. It still shoots great but looks bad. I always shot WLP or Federal primers. I posted about it a long time ago. I don't know why it eroded. But it's got over 50,000 Rds on it. I wonder how much it'd cost to fix it? Link to comment Share on other sites More sharing options...
truborshooter Posted July 4, 2016 Share Posted July 4, 2016 I see more BFE on my light loads guns, like my Steel Challenge and the 1911 I use for instruction. The Federal primers being soft tends to help but Win and others just don't seal well under 115pf Link to comment Share on other sites More sharing options...
Batmo Posted July 4, 2016 Share Posted July 4, 2016 I started to experience BFE with my XDM using federal small pistol magnum match primers. The load is 3.8 grains of Power Pistol pushing a 147 grain lead bullet...OAL 1.140. This load produces a minor PF of 132. Thinking it might be the magnum primer I'm going back to a standard small pistol primer. Link to comment Share on other sites More sharing options...
Tino2212 Posted July 4, 2016 Share Posted July 4, 2016 (edited) @ JD 45 if it shoots great why bother , if the gun is closed you don't see it . Edited July 4, 2016 by Tino2212 Link to comment Share on other sites More sharing options...
Flatland Shooter Posted July 4, 2016 Share Posted July 4, 2016 @ JD 45 if it shoots great why bother , if the gun is closed you don't see it . That's a good point. Has anyone shot their gun until the erosion caused problems? Link to comment Share on other sites More sharing options...
Steve RA Posted July 4, 2016 Share Posted July 4, 2016 All I use are Tula SRPs in 9mm, .45ACP (Federal SP brass) and .223/5.56 and have never had any "rings" on my guns. Pistols are 1911s. Link to comment Share on other sites More sharing options...
Daft Posted July 11, 2016 Share Posted July 11, 2016 On the inside or outside of the hole? Link to comment Share on other sites More sharing options...
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