CHALLENGER AMMO 50172 SUPER MAGNUM 12 GA,Challenger Ammo Super Magnum 12 GA, 3 in, No. 2, 1 1 8 oz, 1550 fps, 25 Rnd per Box Challenger Ammunition is loaded in Canada with the finest components for the economy minded shooter. The fully reloadable plastic hull is primed with sure fire Cheddite primers for consistency shot after shot. Slow burning powders offer unequalled performances; very light recoil, and less shot deformation. The one piece plastic wad, whether double or single piston,