Fort Scott Munitions TUI ammo is a match-grade bullet made of solid copper and engineered to Tumble Upon Impact providing devastating stopping power. While designed as precision ammo for rifle hunters, Fort Scott's multi-patented TUI technology also makes them ideal rounds for home and self-defense or law enforcement. Series Rifle Caliber 5.56x45mm NATO Application Defense/Hunting Bullet Type Solid Copper Spun Bullet Weight 62 gr Muzzle Energy 1410 ft lbs Boxes Per Case 25 Rounds Per Box 20 Casing Material Brass Muzzle Velocity 3200 fps Unit Of Measure box