Underwood Xtreme Defender 9mm Luger 90gr

Underwood Xtreme Defender: Purpose-Built Self-Defense Ammunition

The Xtreme Defender represents a significant advancement in handgun ammunition design, engineered specifically for those who demand reliable performance when it matters most.

Performance Characteristics

Penetration and Wound Cavity

• Achieves up to 18 inches of penetration depth
• Permanent wound cavity over 100% larger than conventional expanding hollow points
• Optimized nose flute design maximizes effectiveness while maintaining structural integrity
• Expansion occurs reliably even after passing through barriers

Ballistic Specifications

• Velocity: 1400 feet per second
• Muzzle energy: 392 foot-pounds
• Bullet weight: 90 grains
• Sectional density: 0.102
• Ballistic coefficient (G1): 0.087
• Supersonic performance ensures consistent velocity and impact

Construction and Materials

Solid Copper Construction

• Lead-free projectile design
• Monolithic copper body resists deformation when passing through barriers
• Unaffected by wallboard, sheet metal, and automotive glass
• Maintains performance in real-world defensive scenarios

Case Quality

• Nickel-plated brass casings provide superior corrosion resistance
• Enhanced feeding reliability across all firearm actions
• Improved cosmetics and easier cleanup for reloaders
• Resists tarnishing during storage and when exposed to moisture or leather
• Boxer-primed and fully reloadable

Practical Advantages

• Non-corrosive formulation ensures safe use in all firearms
• Suppressor-safe design
• 20 rounds per box for convenient carry and practice
• Proven effectiveness for hunting and self-defense applications

The Xtreme Defender represents thoughtful engineering for those who understand that ammunition performance directly impacts personal safety.