Federal Brass Barnes 308 Winchester 165gr TSX Rifle Ammo - 20 Rounds - Federal brought back the immensely popular Barnes Triple-Shock X. This proven all-copper hollow point groups tightly at long range and delivers consistent, large-diameter expansion. The monolithic design retains nearly 100 percent of its weight on impact to penetrate deep, and its grooved shank minimizes barrel fouling and improves accuracy. One-Piece Copper Construction Deep Hollow-Point Tip Grooved Bullet Shank Improves Accuracy Almost 100 Percent Weight Retention Deep Penetration And Large, Consistent Expansion