Hornady® Critical Defense® Triple Defense® .410 Gauge 2.5" Lead 2 Round Balls/1 Slug 35 Cal/41 Cal ammo is an ultrareliable home defense round, designed to deliver lethal defensive performance at an affordable price. Engineered to ensure consistent shot patterns that place all projectiles on a man-sized target at 7 yards, this ammo features Triple Defense® projectile column consisting of two 35-caliber round balls topped and one non-jacketed FTX® slug for superior lethality in virtually any environment. Unique to the Critical Defense 410, the 41 caliber FTX® slug fully engages your shotgun’s rifling and contacts the target nose-on for devastating expansion and enhanced terminal performance, while each 35-caliber round ball is made of high-antimony, cold-swaged lead to resist deformation and provide excellent penetration. Better yet, this ammo features premium plastic hulls and high brass casings for improved reliability and consistent performance.