Federal Premium .308 Winchester 165 Grain Barnes TSX Centerfire Rifle Ammo utilizes Barnes' Triple-Shock X bullets. These proven all-copper, 165-grain hollow points are excellent at delivering long range shots with precision, and mass-effect on target. The monolithic design retains most of its weight on impact and gives you large-diameter expansion. Gain deep penetration with this phenomenal round. The grooved shank greatly reduces carbon fouling, keeping you shooting more between cleans and keeps the accuracy on point. Single-piece copper construction Deep hollow point bullet Grooved bullet shank Excellent weight retention after impact 2650 FPS