The Underwood Ammo Ua 646 45acp+p 200gr Xtreme Penetrator delivers a high-performance .45 ACP +P load built around a solid copper Xtreme Penetrator bullet. Nickel-plated brass cases, flash-suppressed powder, and precise CNC machining come together to provide consistent feeding, reliable ignition, and controlled subsonic velocity that is safe for suppressor use.

This cartridge is tailored for hunting and personal protection, offering deep, straight-line penetration and a permanent wound channel driven by fluid dynamics rather than traditional expansion. With a 200 grain solid monolithic copper projectile, 1000 fps muzzle velocity, and 444 ft lbs of energy, it is well suited for medium to large game as well as serious defensive applications, all backed by Underwood Ammo’s reputation for rigorous testing and quality ammunition craftsmanship.

Key Features:

• Manufacturer: Underwood Ammo
• Model: UA 646 45ACP+P 200GR XP 20/10
• Caliber: .45 ACP +P
• Bullet Type: Solid Monolithic Xtreme Penetrator
• Bullet Weight: 200 Grains
• Case Type: Nickel-Plated Brass
• Muzzle Velocity: 1000 Fps
• Muzzle Energy: 444 Ft Lbs
• Lead Free: Yes
• Suppressor Safe: Yes
• Rounds Per Box: 20