What is a "shear plug failure"?
When we've shot .308 at gongs, AR450 has been more than adequate. No pocking at all with Mil Ball ammo. It's 5.56.... especially M193 that is hardest on gongs.
You CAN get away with a gong as thin as 1/4"... even with 5.56. There was a company in AZ that used to sell them that way. They would hold up for thousands of rounds, but you'd definitely get more life out of a 3/8" 500 plate for sure.
Shooting steel.. or just shooting a gun at all has inherent risk. A freak incident is always possible.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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