The Underwood Ammo Xtreme Penetrator .44 Remington Magnum 220 Grain Solid Monolithic round is engineered for high performance handgun shooting. Built around the Lehigh Defense Xtreme Penetrator solid copper bullet and paired with nickel plated brass cases, this load delivers consistent feeding, deep straight-line penetration, and reliable terminal performance while maintaining standard pressure for safe use in quality .44 Magnum firearms.

This cartridge is well suited for hunting, backcountry defense, and rigorous range training where dependable penetration and accuracy are essential. The solid copper construction and unique nose profile help it punch through common barriers without significant deformation, making it a strong choice for shooters who prioritize predictable performance over expansion. Underwood Ammo’s focus on precision manufacturing and thorough field testing results in ammunition that reflects the company’s reputation for quality and innovation.

Key Features:

• Manufacturer: Underwood Ammo
• Model: Xtreme Penetrator .44 Remington Magnum
• Caliber: .44 Magnum
• Bullet Weight: 220 Grains
• Bullet Style: Lehigh Defense Xtreme Penetrator solid copper
• Case Type: Nickel plated brass
• Muzzle Velocity: 1530 fps
• Muzzle Energy: 1144 ft-lbs
• Cartridges Per Box: 20
• Boxes Per Case: 10
• Reloadable: Yes