Underwood Ammo Xtreme Defense Features The Underwood Ammo Handgun Ammunition in .38 SPL is based on the Xtreme Penetrator bullet platform with an optimized nose flute weight and velocity engineered to reach penetration depths up to 18 inches. The solid copper monolithic body creates a permanent wound cavity far larger in diameter and volume than typical expanding hollow points and it achieves that expansion even after passing through barriers like wallboard sheet metal and automotive glass. At 1300 fps and 375 ft lbs of muzzle energy the 100 grain bullet delivers consistent terminal performance shot after shot. This construction gives the round an edge over conventional hollow points when a barrier stands between the shooter and the target. Each case is nickel-plated brass a process that improves feeding across handgun actions resists corrosion better than traditional brass and resists tarnishing in storage or against leather moisture and other metals. The nickel finish also keeps the rounds looking clean and makes reloading cleanup easier for handloaders who save their brass. Packed 20 rounds to the box this load is sized for range training and immediate carry use alike. Shooters looking for a dependable barrier-blind defensive round in .38 SPL will find this Underwood Ammo load ready for sale at GrabAGun. Underwood Ammo Xtreme Defense Specifications Manufacturer: Underwood Ammo Model: Xtreme Defense Caliber: .38 SPL Bullet Weight: 100 gr Bullet Type: Solid Monolithic Rounds Per Box: 20 Casing Material: Nickel-Plated Brass Muzzle Velocity: 1300 fps Muzzle Energy: 375 ft lbs Sectional Density: 0.11 Application: Personal Defense Available At: GrabAGun