Winchester's Copper Impact features a large-impact-diameter Copper Extreme Point which expands immediately upon contact to deliver massive knockdown power. Its solid copper bullet design offers improved weight retention over standard jacketed lead-core bullets. Series Hunting Caliber 6.8 Western Application Hunting Bullet Type Copper Extreme Point Lead-Free Bullet Weight 162 gr Muzzle Energy 2973 ft lbs Boxes Per Case 10 Rounds Per Box 20 Casing Material Brass Muzzle Velocity 2875 fps Unit Of Measure box