Hornady Critical Defense 410 Bore 1 Slug, 2 RD Ball FTX Centerfire Shotgun Slug Ammunition is some of the best self-defense ammo on the market. Hornady designed this 410 Gauge Ammo with an innovative projectile column that features two 35-caliber round balls and a non-jacketed FTX slug that delivers impressive shot patterns that will stop threats right in their tracks. The round balls used in this Hornady 410 Critical Defense 2 1/2 Centerfire Shotgun Slug Ammo are made of high-antimony, cold-swaged lead that resists deformation to provide reliable target penetration with every shot. Stay prepared with Hornady Critical Defense 410 Triple Defense Shotgun Ammunition to defend yourself and your home with confidence.