Needed to destroy an old external hard drive I had! These were caused by 7.62x39, straight through like butter! Note the little dent underneath! That was caused by a .22LR hollow point! It went in the front and dented the back:
Here you can see the exit holes of the 7.62x39, the small entry hole for the .22LR and the two entry holes for .45 ACP FMJ! One skipped up and the other was stopped dead:
7.62x39 vs a lock:
Dug some of the 7.62x39 out of the embankment:
FYI... 7.62x39 FMJ will destroy an engine block!