Underwood Ammo Xtreme Defender Features The Underwood Xtreme Defender load is built around a 135 grain solid copper projectile engineered for controlled expansion without the risk of jacket and core separation found in traditional bonded bullets. Leaving the muzzle at 1410 feet per second the load delivers a flat trajectory and reliable terminal performance suited to personal defense scenarios. The all-copper design also means no lead fouling from the bullet itself keeping the barrel cleaner over a range session. Underwood built this load specifically to maximize performance from the .45 Colt cartridge in a defensive role. Each box holds 20 rounds giving shooters enough ammunition for practice and carry rotation without needing to purchase a bulk case right away. The lightweight 135 grain bullet contributes to the load s higher velocity compared to heavier traditional .45 Colt projectiles improving expansion reliability at various engagement distances. Underwood s reputation for pushing performance out of established cartridges is reflected in this Xtreme Defender loading. For .45 Colt shooters seeking a serious self-defense round the Underwood Xtreme Defender is available for sale at GrabAGun. Underwood Ammo Xtreme Defender Specifications Manufacturer: Underwood Ammo Model: Xtreme Defender Caliber: .45 Colt Bullet Type: Copper Solid Bullet Weight: 135 gr Muzzle Velocity: 1410 fps Rounds Per Box: 20 Available At: GrabAGun