FEDERAL SPEED-SHOK 410 BORE 3" #6 SHOT SHOTGUN AMMO Speed kills ducks and geese. Now it kills even cleaner with redesigned FederalA(R) Speed-ShokA(R). Its high-performance 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 High-performance primer provides the most complete, consistent ignition possible Optimized velocities Mfg: Federal