Birchwood Casey Spinner Target Double Mag #46244 The double mag circle spinner is quite a popular, and has two disc target that spins, for the "big bore" pistol shooters. You have your choice between the challenging 3" and easier 4 1/4" circle for action you can both hear and see when it is hit. Both magnum targets use 3/8" thick steel. For: center-fire handguns up to .44 magnum. Weight: 5lbs.6 oz.