Speed kills ducks and geese. Now it kills even cleaner with redesigned Federal Speed-Shok . Its Catalyst lead-free primer and fast-burning powder dramatically reduce residue, while its optimized velocities knock birds out of the sky. Features Improved loads Fast-burning, clean propellant leaves drastically less residue in the barrel and action Catalyst high-performance primer provides the most complete, consistent ignition possible Optimized velocities Specifications Gauge: 20 GA Shell Length: 2 -3/4" (70mm) Shot Size: 4 Muzzle Velocity: 1425 fps Type: Steel Oz. Shot: 3/4 oz Usage: Waterfowl Quantity: 25 Rounds/Box