(25) Rounds per box (10 boxes per case). 12ga 2.75'' 1oz #7. This shell is loaded with completely nontoxic #7 steel shot. Its fast 1,378 fps muzzle velocity helps to compensate for steel's relatively low density, thus giving its single ounce shot column the momentum it needs to reach and shatter distant clays. Such high-quality steel shot consists of uniformly spherical and aerodynamic pellets, and it patterns even more efficiently thanks to NobelSport's full-length plastic wad.