Federal Speed-Shok 12 Gauge 3in BB 1-1/4oz Waterfowl Shotshells - 100 Rounds - Speed kills ducks and geese. Now it kills even cleaner with redesigned Federal Speed-Shok. Its high-performance primer and fast-burning powder dramatically reduce residue, while its optimized velocities knock birds out of the sky. Improved Loads Fast-Burning, Clean Propellant Leaves Drastically Less Residue In The Barrel And Action High-performance Primer Provides The Most Complete, Consistent Ignition Possible Optimized Velocities