Delivering effective shot patterns that place all projectiles on a man-sized target at 7 yards, NEW Critical DefenseA(R) 410 features a unique Triple DefenseA(R) column consisting of two .35 cal. round balls topped with one non-jacketed FTXA(R) 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. One thing to notea |this Ammo is meant for rifled barrels. If your barrel is not rifled, the slug will not spin as designed, and accuracy may suffer. Order now!