Underwood Ammo Xtreme Penetrator is handgun ammunition manufactured for the 10mm Auto cartridge. The load features a 140-grain copper solid projectile intended for high-penetration performance in hunting and defensive contexts. Brass cases are nickel-plated and the rounds are listed as reloadable.
Packaging: Box: This product is sold per box containing 20 rounds. Case: Case quantity consists of 10 boxes (200 rounds total); a case is achieved by ordering the required number of boxes to reach the listed boxes-per-case quantity.
Key Specifications
- The cartridge is 10mm Auto.
- The bullet weight is 140 grains.
- The bullet type is Copper Solid.
- The units per box are 20 rounds.
- The boxes per case are 10 boxes.
- The cartridge case finish is Nickel-plated brass.
- The listed muzzle velocity is 1500 ft/s.
- The listed muzzle energy is 700 ft·lbs.
- The rounds are designated reloadable.
Underwood Ammo’s Xtreme Penetrator rounds provide a consistent 140-grain copper solid option for shooters seeking a high-penetration 10mm load with nickel-plated brass and reloadable cases. The packaging options allow purchase by the standard retail box or in bulk by case for range use or field applications.
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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