If you ever see primer like this, STOP, something is very wrong. If standard pressure for 7x64 is about 60.000 psi, I wouldn't be surprised if that pressure was at least 100.000 psi. I have another several cases like this. As a mater of fact, I was there when rifle was fired. It's sporterized M98. Guy had to pound quite hard a bolt handle to open the rifle. I told him not use this rounds and destroy them. He said that ammo was factory made. Hard to believe that something lake this could be loaded in the factory and pass the inspection. Looking at the case body, I couldn't see any trace of resizing: Except possibility of neck sizing, but I am not confident: My apology for pictures, my cell is bit old and I am not the expert.