Underwood Xtreme Defense Platinum 9mm +P 90gr

Underwood Xtreme Defense Platinum: Purpose-Built Performance

The Xtreme Defense Platinum represents a significant advancement in 9mm self-defense ammunition. Built on Underwood's proven Xtreme Penetrator platform, this round combines ballistic engineering with real-world stopping power.

Key Performance Features

Penetration and Wound Cavity

• Optimized nose flute design achieves controlled penetration to approximately 18 inches
• Permanent wound cavity (PWC) exceeds 100% larger diameter and volume than conventional expanding hollow points
• Expansion occurs reliably even after passing through intermediate barriers—wallboard, sheet metal, and automotive glass have minimal effect on performance

Construction and Reliability

• Solid copper monolithic bullet construction ensures consistent performance
• 90-grain projectile at 1475 feet per second generates 435 foot-pounds of muzzle energy
• Supersonic velocity maintains energy downrange
• Nickel-plated brass casings provide superior corrosion resistance, improved feeding reliability, and easier reloading

Specifications

• Caliber: 9mm Luger +P
• Bullet Weight: 90 grains
• Velocity: 1475 fps
• Muzzle Energy: 435 ft lbs
• Ballistic Coefficient (G1): 0.087
• Sectional Density: 0.102
• Case: Nickel-plated brass, reloadable, boxer-primed
• Primer: Non-corrosive
• Ammunition Per Box: 20 rounds

Practical Advantages

This ammunition is suppressor-safe and engineered for both hunting and self-defense applications. The lead-free copper construction makes it suitable for indoor ranges and environmentally conscious shooters. Nickel-plated casings resist tarnishing during storage and maintain their appearance through multiple reloading cycles.