Federal Speed-Shok, Lead Free, 16 Gauge 2.75, #4, 15/16 oz, Steel Shot, 25 Round Box, California Certified Nonlead Ammunition WF168 4 Speed kills, now it stops 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.