Underwood Ammo Handgun Ammunition Features This Underwood .45 ACP load drives a 230 grain jacketed hollow point bullet to 920 feet per second producing 432 ft lbs of muzzle energy for reliable expansion and stopping power. The bullet s copper and lead construction at a diameter of 0.451 inches is engineered to expand consistently on impact for effective self-defense performance. A sectional density around 0.162 reflects how well the bullet s mass is distributed to support penetration through its path. This subsonic loading keeps the round traveling slower than the speed of sound reducing report when paired with a suppressor. The nickel plated brass case resists corrosion and helps ensure smooth reliable feeding across a range of .45 ACP pistols. Because the round is subsonic it is well suited to suppressed use where reduced sound signature matters and Underwood confirms this load is safe for suppressor use. Each box contains 20 rounds a standard count for shooters carrying this load for personal defense. Underwood .45 ACP 230 Grain JHP is for sale at GrabAGun for shooters who want dependable hard-hitting defensive ammunition from a trusted American manufacturer. Underwood Ammo Handgun Ammunition Specifications Manufacturer: Underwood Ammo Caliber: .45 ACP Bullet Type: Jacketed Hollow Point Grain: 230 gr Rounds Per Box: 20 Muzzle Velocity: 920 fps Muzzle Energy: 432 ft lbs Available At: GrabAGun