Federal Premium, Prairie Storm, 20 Gauge 2 3/4, FS Lead, #5, 1 oz, 25 Round Box PFX204FS5 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.