The Underwood Xtreme Defender is a high-velocity 10mm Auto load featuring a 115-grain copper solid projectile intended for hunting and self-defense applications. The round is offered in nickel-plated brass, boxer-primed, reloadable cases and is listed at a muzzle velocity of 1700 feet per second with 738 ft·lbs of energy. Each retail unit is sold per box and contains 20 loaded cartridges. A case quantity is achieved by ordering multiple boxes; this product is packaged with 10 boxes per case (200 rounds total).
Key Specifications
- Caliber: 10mm Auto.
- Bullet weight: 115 grains.
- Bullet type: Copper solid.
- Muzzle velocity: 1700 ft/s.
- Muzzle energy: 738 ft·lbs.
- Cartridges per box: 20 rounds.
- Boxes per case: 10 boxes (200 rounds).
- Case material: Nickel-plated brass.
- Reloadable: Yes (box-primed brass).
- Manufacturer: Underwood Ammo.
This ammunition provides a consistent, high-velocity copper solid projectile for users seeking a dedicated hunting or defensive 10mm option. The nickel-plated brass cases are reloadable and suited to routine handling and storage, and the 20-round box format allows for convenient retail purchase or accumulation to full case quantities when desired.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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