Underwood Xtreme Defender 9mm Luger +P 68gr

Underwood Xtreme Defender: Purpose-Built for Self-Defense

The Xtreme Defender represents a significant advancement in handgun ammunition design, engineered specifically for those who demand reliable performance in critical situations.

Ballistic Performance

• Velocity: 1800 feet per second
• Muzzle Energy: 489 foot-pounds
• Penetration: Up to 18 inches with consistent, predictable performance
• Permanent Wound Cavity: Over 100% larger than conventional expanding hollow points
• Ballistic Coefficient: 0.087 (G1)

Construction and Design

The Xtreme Defender employs a solid copper monolithic bullet body—a design choice that delivers measurable advantages. The optimized nose flute geometry creates a permanent wound channel of exceptional diameter and volume while maintaining expansion even after passing through common barriers like wallboard, sheet metal, and automotive glass.

Unlike traditional hollow points that may fail when encountering intermediate barriers, the solid copper construction ensures barrier-blind performance. This means the round functions as intended whether it encounters soft tissue or common obstacles.

Ammunition Specifications

• Caliber: 9mm Luger +P
• Bullet Weight: 68 grains
• Bullet Diameter: 0.355 inches
• Case: Nickel-plated brass, boxer-primed and reloadable
• Powder: Non-corrosive
• Lead-Free: Yes
• Suppressor Safe: Yes

Case Quality

The nickel-plated brass cases offer practical advantages beyond aesthetics. The nickel-plating process provides superior corrosion resistance compared to traditional brass, resists tarnishing during storage, and simplifies cleanup during the reloading process. These cases will not discolor when stored with leather, moisture, or other metals.

Applications

Designed as a premium self-defense round, the Xtreme Defender is also suitable for hunting applications where controlled penetration and reliable expansion are priorities. Each box contains 20 rounds of new production ammunition.