|
|
03-22-2010, 02:25 AM
|
|
Member
|
|
|
Join Date: Aug 2007
Location: Oro Valley, Arizona
Posts: 2,370
Likes: 497
Liked 943 Times in 518 Posts
|
|
Pitting on breech face. Cause? (Photo added)
On my .45 autos, I see a ring pattern of pitting around the firing pin hole. The diameter of the pitting pattern makes me think it is from leaking primers.
I shoot mostly reloads, and my cases have been reloaded extensively. There are no visible signs of primer leakage such as powder stains around the primer or loose primers.
Is this unusual?
Last edited by andyo5; 03-22-2010 at 05:50 PM.
|
03-22-2010, 01:06 PM
|
|
Member
|
|
|
Join Date: Oct 2003
Location: Southeast Wisconsin
Posts: 1,750
Likes: 7
Liked 657 Times in 369 Posts
|
|
Leaking primer pockets IF they are very worn & loose. The brass must be pretty old if .45 ACP is leaking. I've seen it more on magnum revolvers.
Bruce
|
03-22-2010, 08:37 PM
|
|
Member
|
|
|
Join Date: Oct 2001
Location: Florida, USA
Posts: 707
Likes: 173
Liked 213 Times in 120 Posts
|
|
I have the same situation on a Glock 23. I sent the slide back to Glock and they said it was an ammo problem having to do with the primers. I don't reload ammo for the gun and all ammo fired through it was Blazer or Gold Dots. Glock said that my slide was safe to use.
Bill
|
03-22-2010, 10:12 PM
|
|
Member
|
|
|
Join Date: Aug 2007
Location: Oro Valley, Arizona
Posts: 2,370
Likes: 497
Liked 943 Times in 518 Posts
|
|
Quote:
Originally Posted by Dot_mdb
I have the same situation on a Glock 23. I sent the slide back to Glock and they said it was an ammo problem having to do with the primers. I don't reload ammo for the gun and all ammo fired through it was Blazer or Gold Dots. Glock said that my slide was safe to use.
Bill
|
Thanks, Dot. At the moment I am trying to determine whether this is a common phenomenon or something due to my reloads. Maybe I should post this question in the reloading section.
|
03-22-2010, 10:14 PM
|
Member
|
|
|
Join Date: Feb 2004
Location: OK. U.S.A.
Posts: 1,099
Likes: 5
Liked 296 Times in 189 Posts
|
|
Seems to be a common feature on guns thats been shot a lot
|
03-23-2010, 12:39 AM
|
|
US Veteran Absent Comrade
|
|
|
Join Date: Jun 2009
Location: Texas
Posts: 7,580
Likes: 13,500
Liked 6,743 Times in 2,526 Posts
|
|
It is a common feature and is caused by gas leaking back between the primer and the primer pocket before the primer has had a chance to expand and create a seal. I've seen it on lots of handguns and rifles, those that have been shot with handloads and those shot with factory. it's not a problem.
|
03-23-2010, 01:29 AM
|
Member
|
|
|
Join Date: Feb 2006
Posts: 1,057
Likes: 1
Liked 54 Times in 20 Posts
|
|
Normal wear from shooting.
|
03-23-2010, 05:19 AM
|
|
Member
|
|
|
Join Date: Aug 2007
Location: Oro Valley, Arizona
Posts: 2,370
Likes: 497
Liked 943 Times in 518 Posts
|
|
Quote:
Originally Posted by Cyrano
It is a common feature and is caused by gas leaking back between the primer and the primer pocket before the primer has had a chance to expand and create a seal. I've seen it on lots of handguns and rifles, those that have been shot with handloads and those shot with factory. it's not a problem.
|
Interestingly, none of my revolvers show this wear. Only my semi-autos. And I reload for both types. Some of my .357 revolver loads are pretty stiff, yet no breech face wear.
|
03-23-2010, 07:00 AM
|
|
Member
|
|
|
Join Date: Mar 2000
Location: Texas
Posts: 272
Likes: 35
Liked 41 Times in 32 Posts
|
|
Were these, by chance, old Remington primers? A friend of mine had some bad pitting on an M&P9 with old Remingtons. He called Remington and found out there had been a recall on the primers due to the leakage-I think something to do with the shape of the anvil. The primers were OLD, though, as in 1990s, and he damage was more extensive.
|
03-23-2010, 08:33 AM
|
|
Member
|
|
|
Join Date: Aug 2007
Location: Oro Valley, Arizona
Posts: 2,370
Likes: 497
Liked 943 Times in 518 Posts
|
|
Quote:
Originally Posted by Jhp147
Were these, by chance, old Remington primers? A friend of mine had some bad pitting on an M&P9 with old Remingtons. He called Remington and found out there had been a recall on the primers due to the leakage-I think something to do with the shape of the anvil. The primers were OLD, though, as in 1990s, and he damage was more extensive.
|
They are Winchester large pistol (WLP) primers and are not very old.
Thanks.
|
03-23-2010, 10:45 AM
|
|
Member
|
|
|
Join Date: Nov 2009
Location: Watkinsville, GA
Posts: 1,843
Likes: 0
Liked 180 Times in 73 Posts
|
|
normal wear....
shoot it, you won't wear it out
|
03-23-2010, 12:35 PM
|
Member
|
|
|
Join Date: Mar 2006
Location: Schertz, Texas
Posts: 256
Likes: 7
Liked 4 Times in 4 Posts
|
|
I had the same problem with both a Model 19-4 and a Model 27-2. I traced it to a primer seating problem with the old hand-held primer seating tool I was using.
The ram was a little too short, causing primers not to be seated firmly. In other words, as I would seat a primer in the case, the short ram was a little short so that the primer would not go into the primer hole as far as it needed to....it would go in and stop just short of bottoming out.
Thus, upon firing even mild handloads, the gas would leak by between the primer and the case causing the small pok marks or burn holes.
When I replaced the old tool, my problems went away.
|
|
Posting Rules
|
|
|
|
|