I bought a lot of this cheap for reloading. I have discovered about 20% of it wont size. Most of the 20% won't even fit into the shell holder unless I push hard, or diddle around with the case. Some cases will fit into the shellholder in one direction, but not if you rotate the case 90 degrees, so its like they are not even round, more like ovals. I have learned that if I have any trouble fitting the case into the shell holder, it cannot be resized. I pulled out my small base die, and tried it, but it still can't salvage them. I think the problem is the case head is out of round.
Is this normal for machine gun fired brass?
Is this normal for machine gun fired brass?