Barnes Triple-Shock X has 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. Series Hunting Caliber 300 WSM Application Hunting Bullet Type Barnes TSX Bullet Weight 165 gr Muzzle Energy 3589 ft lbs Boxes Per Case 10 Rounds Per Box 20 Casing Material Brass Muzzle Velocity 3130 fps Unit Of Measure box