Have a big bore pistol and looking for a challenge Give the Birchwood Casey World of Targets Super Double Mag Spinner Target a whirl. Two-disc spinning target features a 6.38 circle as well as a 4.5 circle to test your skills. Built-in footrest allows you to easily push the target into the ground for a simple setup. Innovative twist design features no welds, which increases durability. Made of solid steel with 3/8-thick steel targets. For use with centerfire handguns up to .44 Mag (not for use with rimfire calibers). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Targets.