The Underwood Xtreme Defender .380 ACP +P 68 grain Solid Monolithic is a purpose-built handgun cartridge intended for personal defense and everyday carry platforms. It uses a solid copper monolithic projectile that contains no lead and is loaded into nickel‑plated, boxer‑primed, reloadable brass cases. The round is loaded to a 1400 fps muzzle velocity and is rated +P; each retail box contains 20 rounds and cases are arranged as multiple boxes.
Packaging: Box: Sold per box containing 20 rounds. Case: Sold by the case; a case quantity is achieved by ordering the required number of boxes (this product is packaged as 10 boxes per case).
Key Specifications
- Caliber is .380 ACP.
- Bullet weight is 68 grains.
- Bullet type is Solid Monolithic.
- Muzzle velocity is 1400 fps.
- Muzzle energy is 296 ft lbs.
- Case material is Nickel-Plated Brass.
- Primer type is Boxer primed.
- Bullet material is Copper (lead-free).
- Pressure rating is +P.
- Units per box is 20 rounds.
This load combines a monolithic copper projectile with a high-velocity profile and nickel‑plated brass for reliable feeding, corrosion resistance, and reloadability. The design targets consistent terminal performance and robust barrier resistance in a compact defensive cartridge format.
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.




