Rubber mulch in a 18 deep 3/4 inch ply wood box by a foot wide full of rubber mulch has stopped big bore 45 texan 340 gr at like 500 ftlbs and 22lr as well at 2or3 feet away from the barrel had one ricochet because I hit the top into the plywood I didn't line it up well that day ever since I make sure I'm lined up to go into the mulch and it stops everything.
Thousands of rounds into it now
Thousands of rounds into it now
Upvote 0