Delivering effective shot patterns that place all projectiles on a man-sized target at 7 yards, NEW Critical Defense 410 features a unique Triple Defense column consisting of two .35 cal. round balls topped with one non-jacketed FTX® slug. Unique to the Critical Defense 410, the .41 cal. FTX slug actually engages the gun's rifling, and contacts the target nose-on, for greatly enhanced terminal performance. Each .35 cal. round ball is made of high-antimony cold-swaged lead to resist deformation and provide excellent penetration.