Underwood Ammo Xtreme Defender Platinum is a 10mm Auto handgun cartridge loaded with a 115‑grain copper solid projectile suitable for hunting and self-defense applications. The ammunition is new-production, non-corrosive and loaded in nickel-plated, reloadable brass cases with boxer primers. The listed performance for this load is 1700 feet per second and 738 ft-lbs of muzzle energy. The product is sold per box containing 20 rounds and can be ordered by the case; a case is fulfilled by ordering 10 boxes (200 rounds).
Key Specifications
- The cartridge is 10mm.
- The bullet weight is 115 grains.
- The bullet construction is Copper Solid.
- The listed muzzle velocity is 1700 feet per second.
- The listed muzzle energy is 738 ft lbs.
- The cases are nickel-plated brass.
- Each box contains 20 rounds.
- A case consists of 10 boxes (200 rounds).
- The ammunition is boxer-primed and reloadable.
This Underwood 10mm load offers a lead‑free copper projectile and high listed velocity in a reloadable nickel‑plated brass case, making it a practical choice for informed shooters seeking consistent, high-performance 10mm ammunition. Available per 20‑round box or by case, it provides a straightforward option for those who prefer copper solid projectiles.
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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