Allen EZ-Aim AR500 Steel Gong Target. The EZ Aim 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 200yds, these targets can be used with centerfire handgun and firearm calibers up to .300 Winchester Magnum (.300WM, .300 WinMag). Safe at 200-yards, targets can be used with centerfire handgun and firearm cal. up to .300 Winchester Magnum (.300WM, .300 WinMag) Provides the greatest durability and longevity, lasting thousands of rounds Durable AR500 steel provides audible and visual feedback during target practice—white powder coating helps you spot hits Square holes on the top of the target are for carriage bolts