Underwood Xtreme Defender 380 ACP 68gr Solid Copper

Underwood Xtreme Defender: Purpose-Built Self-Defense Ammunition

The Xtreme Defender represents a thoughtful evolution in defensive ammunition design. Built on proven engineering principles, this round prioritizes what matters most in a defensive scenario: reliable penetration and effective wound characteristics.

Performance Characteristics

Penetration and Wound Cavity

• Achieves penetration depths up to 18 inches with a permanent wound cavity
• Permanent wound cavity diameter and volume exceed 100% larger than conventional expanding hollow points
• Maintains effectiveness even when fired through common barriers like wallboard, sheet metal, and automotive glass

Ballistic Specifications

• Caliber: .380 ACP
• Bullet weight: 68 grains
• Muzzle velocity: 1300 feet per second
• Muzzle energy: 255 foot-pounds
• Ballistic coefficient (G1): 0.087
• Sectional density: 0.077
• Supersonic performance

Construction and Materials

Solid Copper Design The solid copper body ensures barrier-blind performance. Whether your defensive scenario involves drywall, vehicle glass, or other common obstacles, the Xtreme Defender maintains its wound channel integrity.

Nickel-Plated Brass Cases Nickel-plating provides multiple practical advantages: improved feeding reliability across all firearm actions, superior corrosion resistance compared to traditional brass, enhanced appearance, and easier cleanup during reloading. These cases resist tarnishing during storage and maintain their integrity when exposed to moisture and other metals.

Specifications

• Primer: Boxer (reloadable)
• Case Material: Nickel-plated brass
• Bullet Material: Solid copper (lead-free)
• Bullet Diameter: 0.355 inch
• Configuration: 20 rounds per box
• Production: New production, non-corrosive
• Suppressor Safe: Yes

Intended Use

This ammunition is engineered specifically for self-defense applications where reliable performance and effective stopping characteristics are paramount. The combination of solid copper construction, optimized nose flute design, and carefully calculated velocity delivers the performance characteristics serious shooters demand.