The DT Hunting .454 Long Casull 250 grain Barns lead free solid copper XPB hollow point round opens instantly on impact. The nose peels back into four sharp-edged copper petals to provide maximum tissue damage destroying bone and vital organs for a quick humane kill. Make sure you re ready for anything on the trail or in the backcountry with DoubleTap Hunter ammunition! Specifications: Bullet Weight: 250 GR Rounds Per Box: 20 Casing Material: Brass Bullet Type Barnes: XPB Muzzle Energy: 1799 ft lbs Muzzle Velocity: 1800 fps