I know you shouldn't see any pressure signs in 38 SPL, even at +P pressures, but interestingly, I had some factory ammo that flattened the heck out of the primers.
I think it was some Federal American Eagle 130 gr FMJ. Not +P either. All of the primers were about as flat as they could get. When I knocked them out, they had a mushroom shaped top. I think the material they were made out of was about as thick as tinfoil. They were not like the CCI primers I typically use.
So, with strangely thin primer cups, you might see pressure signs.
Mike
__________________
NRA Certified Pistol Inst.
|