Underwood 40 S&W 155gr XTP Jacketed Hollow Point

Underwood 40 S&W 155gr XTP Performance Ammunition

Underwood Ammo has engineered this 40 S&W round with serious intent: reliable, effective performance when it matters most.

Bullet Design & Performance

Hornady XTP Technology: The eXtreme Terminal Performance bullet is purpose-built for handgun defense. It delivers:

• Controlled expansion for reliable stopping power
• Deep penetration to reach vital areas
• Exceptional accuracy from shot to shot
• Proven performance in real-world firearms

Ballistic Specifications

• Velocity: 1300 feet per second
• Muzzle Energy: 582 foot-pounds
• Ballistic Coefficient: 0.137 (G1)
• Sectional Density: 0.138

These figures indicate a round that maintains velocity downrange while delivering consistent terminal performance.

Case & Powder

Nickel-Plated Brass: Superior to standard brass in every practical way:

• Enhanced feeding reliability across all firearm actions
• Exceptional corrosion resistance
• Resists tarnishing during storage
• Easier cleanup for reloaders
• Professional appearance

Flash-Suppressed Powder: Critical for low-light defensive situations. This formulation minimizes muzzle flash, preserving your night vision when you need it most.

Specifications

• Caliber: 40 S&W
• Bullet Weight: 155 grains
• Bullet Type: Jacketed Hollow Point
• Case Type: Nickel-plated brass, boxer-primed, reloadable
• Rounds per Box: 20
• Supersonic: Yes
• Suppressor Safe: Yes

Application

This ammunition is engineered for self-defense and duty use. Field-tested in popular firearms, it delivers the performance you expect when reliability cannot be compromised.