The Fort Scott Munitions Tumble Upon Impact (TUI) 10mm 125 Grain Solid Copper Spun ammunition is a high-performance match-grade round designed for optimal self-defense capabilities. Featuring a solid copper spun projectile this ammunition is engineered to deliver exceptional accuracy while ensuring devastating effectiveness upon impact. The patented Tumble Upon Impact design allows the projectile to create a dynamic wound cavity and penetrate deeply into targets making it a reliable choice for home defense applications. With a muzzle velocity of 1611 fps and a muzzle energy of 714 ft-lbs this 10mm round offers both speed and power. Each cartridge is loaded in high-quality brass casings providing smooth consistent performance in a variety of handgun platforms. This product is packaged with 20 rounds per box and is an excellent choice for those seeking innovative and dependable ammunition.