Underwood Ammo Xtreme Penetrator Features The Underwood Ammo Xtreme Penetrator in .45 ACP +P drives a 200 grain copper solid monolithic bullet to 1000 fps for 444 ft lbs of muzzle energy at the muzzle. Because the bullet is a solid monolithic design rather than an expanding hollow point it is built to punch through heavy bone barriers and thick hide for deep straight-line penetration. This makes the load well suited to hunters pursuing medium to large game where reliable penetration matters more than expansion. A sectional density of 0.14 further supports the bullet s ability to drive deep on tough targets. Each round is built on a nickel-plated brass casing which resists corrosion and feeds smoothly through a wide range of .45 ACP handguns. The +P rating signals increased pressure over standard .45 ACP loads delivering more velocity and energy for shooters whose firearms are rated for +P use. Packaged 20 rounds to a box the Xtreme Penetrator gives shooters enough rounds for a solid range session or hunting trip. Underwood Ammo built this load specifically for shooters who need a hard-hitting deep-penetrating option in .45 ACP. Underwood Ammo Xtreme Penetrator Specifications Manufacturer: Underwood Ammo Model: Xtreme Penetrator Caliber: .45 ACP Bullet Weight: 200 gr Bullet Type: Copper Solid Monolithic Rating: +P Casing Material: Nickel-Plated Brass Muzzle Velocity: 1000 fps Muzzle Energy: 444 ft lbs Sectional Density: 0.14 Rounds Per Box: 20 Available At: GrabAGun