Brownells 75th Anniversary - A Shooting Heritage

Wound Cavities Like You ve Never Seen

You asked for a round that would penetrate barriers and still produce an enormous wound cavity, so Underwood Ammo has your answer: the Xtreme Defense round from their Xtreme Defender line of quality ammunition. With reduced recoil, the solid copper body passes through barriers with ease and still delivers lethal performance.

The Underwood Ammo Xtreme Defense CNC solid copper round round features radial flutes that force all the hydraulic energy inward, building pressure inside the target. The minimum surface at the tip increases the force at the point of contact.

  • Bullet weight: 120 grains
  • Muzzle velocity: 1,420 fps
  • Muzzle energy: 537 ft/lbs
  • 20 rounds per box

The Underwood Ammo Xtreme Defense ammo balances weight, velocity, and an optimized nose flute to give you maximum penetration and performance.

You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition. All ammunition must be shipped Domestic Ground. Shipping not available for International residents. Residents in CA, DC, IL, MA, NY, CT, and NJ may have additional restrictions. Always make sure you use the correct ammunition for your firearms. Check your state and local laws for any other applicable firearms and ammunition regulations. Due to Department of Transportation regulations, we cannot accept returns on ammo. Please check local laws before ordering. View full restrictions here.

Ammunition pricing is per box.

ATTENTION – California Customers
Brownells is still shipping ammunition orders to California but the process has changed to comply with California Proposition 63. We must now ship ammunition purchased online to an FFL or California-approved ammunition dealer. After placing your order, a Brownells representative will contact you to ensure your ammunition arrives quickly and in compliance with the law.


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