Federal Premium, Prairie Storm, 12 Gauge 2.75, FS Lead, #6, 1 1/4 oz, 25 Round Box PFX154FS6 Federal's Premium Prairie Storm FS Lead uses the Flightcontrol wad and a mixed payload of standard pellets and Flightstopper lead to produce full, consistent patterns. Excellent retained velocity and energy mean increased lethality and fewer lost birds.