U.S.SFC_RET
Member
I watched a shooter with an M1 breaking in two krieger barrels. He would shoot one round and clean the barrel, that's good because it means a cleaner shooting barrel inthe future. He showed me a split case from one of his M1 Garands that he was shooting and wanted to blame the govt '43 ammo that he was shooting. I asked him to let me look at some of the shot brass and this is what I saw.
The split firing case was split from the shoulder all of the way through to the primer. (he is one lucky fellow) The primer was a bit sunk in compared to the rest.
1. One very heavy scratch mark running along the alot of brass cases.
2. Firing pin mark seemed to raised around the firing pin as the firing pin struck the case during firing.
3. What looked like stretch marks just above the base of the brass.
I asked him if he reloaded, he said no but he wanted to blame the Ammunition since the barrels on both M1s were installed by a (very) reputable Gunsmith in the Eastern Md/Pa Region. He spoke of him as if every one knew him, I didn't and I can't recall his name.
Is it a Firing pin timing issue? Is it a New barrel Headspace issue?
Is it an Ammunition issue.
I believe that it is a headspace issue pure and simple and when You install a new barrel on an M1 Garand you have to use a pull through reamer to set the headspace on that new barrel. I am assuming this (reputable) gunsmith either mucked up a barrel or installed a bad barrel to begin with.
The split firing case was split from the shoulder all of the way through to the primer. (he is one lucky fellow) The primer was a bit sunk in compared to the rest.
1. One very heavy scratch mark running along the alot of brass cases.
2. Firing pin mark seemed to raised around the firing pin as the firing pin struck the case during firing.
3. What looked like stretch marks just above the base of the brass.
I asked him if he reloaded, he said no but he wanted to blame the Ammunition since the barrels on both M1s were installed by a (very) reputable Gunsmith in the Eastern Md/Pa Region. He spoke of him as if every one knew him, I didn't and I can't recall his name.
Is it a Firing pin timing issue? Is it a New barrel Headspace issue?
Is it an Ammunition issue.
I believe that it is a headspace issue pure and simple and when You install a new barrel on an M1 Garand you have to use a pull through reamer to set the headspace on that new barrel. I am assuming this (reputable) gunsmith either mucked up a barrel or installed a bad barrel to begin with.