We shoot AR500 and nothing phases it (under 3800 fps and nothing steel core of course). 22-250 at 100 to 150yards pits it pretty good. So no more 22-250 at my range .223 up to 300 win mag doesn't phase it. I've shot handgun down to 5 yards. Not sure I'm going to do that again without frangible ammo though. The .45's richochet pretty bad on our setup. We were getting fragments back to 15 yards or more.