The Allen Company Round AR500 Steel Gong Shooting Target provides you with the greatest durability and longevity, lasting thousands of rounds. When the target is struck, the AR500 steel gives you audible and visual feedback during target practice. At a safe distance of 200-yards, these targets can be used with centerfire handgun and firearm cal. up to .300 Winchester Magnum (.300WM, .300 WinMag). Allen Company 10" Round Steel Plate Shooting Target, Ar500 Armor Plate, White/Red, Square Holes for Carriage Bolts.