Underwood Ammo XTP Features The Underwood Ammo XTP load in .45 ACP +P utilizes Hornady s eXtreme Terminal Performance bullet engineered for deep terminal penetration excellent accuracy and controlled expansion on impact. At 185 grains and 1200 feet per second the round generates 592 foot pounds of muzzle energy giving it real stopping power in a self-defense role. Underwood loads the round with flash-suppressed powder so a shooter s vision is not compromised if the firearm has to be used in low light conditions. This attention to real-world usability sets the XTP load apart from ammunition built purely around paper ballistics. Nickel-plated brass casings provide several practical benefits over traditional brass including improved feeding across different firearm actions and better resistance to corrosion during long-term storage. The plating also keeps the cases from tarnishing when in contact with leather moisture or other metals which matters for a round carried daily in a holster or magazine. A sectional density of roughly 0.13 helps the bullet track straight through barriers for reliable penetration on target. Packaged 20 rounds to a box this is a dependable choice for shooters who carry a .45 ACP pistol for personal protection. Underwood Ammo XTP Specifications Manufacturer: Underwood Ammo Model: XTP Caliber: .45 ACP Rating: +P Bullet Weight: 185 gr Bullet Type: Jacketed Hollow Point Muzzle Velocity: 1200 fps Muzzle Energy: 592 ft lbs Sectional Density: 0.13 Rounds Per Box: 20 Available At: GrabAGun