Federal Prairie Storm, FLIGHTCONTROL FLEX WAD, 12 Gauge, 2.75, #4 Shot, CPL/Nickel-plated Lead Pellets, 25 Round Box PFX126FS 4 These trusted upland loads utilize the rear-opening FLITECONTROL FLEX wad and a mixed payload of standard pellets and FLITESTOPPER lead to produce full, consistent patterns through any choke.