I have been having recurrent problems with a lot of 124 grain PPU NATO Ammo. It locks up very reliable guns intermittently.
It also sheds circular or near circular chunks of brass which I think end up in the chamber and prevent the gun from going completely into battery, which is the malfunction I am getting.
My shooting area was cover s with these pieces after a few hundred rounds today and they were hitting me in the head and eye pro throughout the session.
Malfunction OOB:
Ammo box
I am simply curious what causes this as I have never seen the problem before? I case gauged a few cartridges that failed to feed and they were in spec.
I may contact PPU directly about the issue but wanted to get input from here as well. The culprit seems to be limited to 124 grain NATO as I have regular pressure stuff that seems to run fine.