Underwood Xtreme Defender .45 ACP+P 135gr

Underwood Xtreme Defender .45 ACP+P

The Xtreme Defender represents a significant advancement in self-defense ammunition design. Built on proven engineering principles, this round combines a solid copper projectile with optimized ballistics to deliver consistent, reliable performance when it matters most.

Ballistic Performance

• Caliber: .45 ACP+P
• Bullet Weight: 135 grains
• Velocity: 1335 feet per second
• Muzzle Energy: 537 foot-pounds
• Bullet Material: Solid copper (lead-free)
• Ballistic Coefficient: Optimized for consistent flight

Design Features

The solid copper construction ensures consistent performance regardless of barriers. Unlike traditional hollow-point designs that can fail when passing through intermediate barriers, the Xtreme Defender maintains its wound-creating capability even after penetrating wallboard, sheet metal, or automotive glass.

The optimized nose flute geometry is engineered to create a permanent wound cavity significantly larger than competing expanding ammunition, while maintaining penetration depths up to 18 inches—the depth recommended by leading ballistics researchers.

Case Quality

Nickel-plated brass casings provide multiple advantages: improved feeding reliability across all firearm actions, superior corrosion resistance compared to traditional brass, enhanced cosmetics, and easier cleanup during reloading. The nickel plating prevents tarnishing during storage and resists degradation from contact with leather, moisture, and other metals.

Specifications

• Boxer Primed: Reloadable
• Non-Corrosive: New production
• Suppressor Safe: Yes
• Supersonic: Travels faster than the speed of sound
• Packaging: 20 rounds per box

This ammunition is purpose-built for self-defense applications where reliability and performance are non-negotiable.