Winchester Ammunition Defender, Supreme Elite, 410 Gauge, 2.5, Buckshot, 3 Defense, Discs/12 BB Pellets, 10 Round Box S410PDX1 Highly effective in both 410 compatible handguns and shotguns, the 410-gauge PDX1 Defender ammunition features a distinctive black hull and black oxide high-base head; it combines 3 plated Defense Disc projectiles and 12 pellets of plated BB shot. The result is the ideal personal defense load for short-range engagements with the performance needed to stop threats.