SIG ELITE SERIES COPPER rounds use premium-quality powders and primers for minimum velocity variation and yield a 1.8x diameter expansion. Perfected for easy rifle feeding, with an optimized nose geometry, and premium nickel-plated shell casings that deliver consistently reliable accuracy for taking down game. Series Elite Caliber 300 Win Mag Application Hunting Bullet Type Copper Solid Bullet Weight 165 gr Muzzle Energy 3543 ft lbs Boxes Per Case 10 Rounds Per Box 20 Casing Material Brass Muzzle Velocity 3110 fps Unit Of Measure box