Underwood Ammo Xtreme Defender 45 ACP 135 Grain Nickel-Plated Ammunition

Underwood Ammo manufactures this Xtreme Defender ammunition in new production, non-corrosive boxer-primed brass cases that are reloadable. Loaded to .45 ACP +P specifications, each round features a 135-grain copper bullet with a 0.452-inch diameter that exits the barrel at 1335 feet per second, generating 537 ft lbs of muzzle energy. The nickel-plated brass cases deliver reliable performance, and the lead-free projectile is rated safe for use in suppressors. This round is designed as a supersonic load and travels faster than the speed of sound, making it an effective choice for the ultimate in self-defense applications. The bullet maintains a Sectional Density (SD) of 0.083908573218621—a measure of how well an object’s mass is distributed by its shape to overcome resistance along a given axis. Each box contains 20 loaded pieces of ammunition and represents a proven round for hunting.