200rds – 10mm Underwood 140gr. Xtreme Penetrator Ammo

Underwood Ammo 140 Grain Solid Copper Ammo Details

The Xtreme Penetrator. It’s a CNC machined solid copper bullet with a distinctive “drill bit” nose profile. Lehigh Defense designed it for defensive applications, and it’s yours to apply so long as you’ve got a 10mm firearm.

The Xtreme Penetrator is one tough cookie. It reliably achieves over twice as much penetration as a traditional JHP thanks to its rugged monolithic construction. The Xtreme Penetrator’s inability to expand also contributes to its deep wound channel. The bullet uses its four radial flutes to scoop up soft tissues and almost instantly jet them outward at high velocity (potentially even higher velocity than the bullet is traveling itself). The result? A large, permanent wound column.

Underwood loads this ammo’s lead-free bullets with high-quality touches. Flash-suppressed propellant may just save the day if you ever have to fire your pistol at night, when a bright flash of light would blind you. Nickel-plated brass cases resist tarnishing and corrosion, and feed nice and smoothly in semi-auto handguns and carbines to boot.