Our ½” AR500 steel shooting targets are intended for magnum high power rifles rounds at less than 200 yards, and for heavy use by clubs, law enforcment, and private ranges. These gong targets may also be used with .50 BMG rounds at 600 yards. Most military surplus .50 BMG ammunition is steel core, and may penetrate or damage steel targets. Our testing was conducted with Hornedy factory loaded AMAX 750 grain projectiles. Details of testing can be found here.