Underwood Ammunition 45 Colt (Long Colt) +P 250 Grain Lehigh Xtreme Penetrator Lead-Free Box of 20

The Underwood Ammunition 45 Colt (Long Colt) +P 250 Grain Lehigh Xtreme Penetrator Lead-Free Box of 20 uses a solid copper fluted bullet engineered to cut rather than expand. Underwood pushes this +P loading to serious velocity for a revolver cartridge. As a result, shooters get consistent, wide wound channels through fluid mechanics rather than traditional expansion. This loading suits personal defense, backcountry carry, and serious revolver protection.

About This Underwood Xtreme Penetrator 45 Colt Long Colt +P Load

Underwood loads this cartridge with the Lehigh Defense Xtreme Penetrator, a solid copper bullet machined with fluted cutting edges. Those flutes create hydraulic pressure waves as the bullet drives through tissue, producing a wide wound channel without relying on expansion. Because the bullet is solid copper, it does not fragment or lose weight. Underwood recommends verifying that a revolver can safely handle +P pressures before firing this ammunition. Liberty Anno Supply stocks this loading in 20-round boxes for serious defensive use. Shooters can count on consistent quality from batch to batch.

Why Shooters Choose Underwood Xtreme Penetrator 45 Colt Long Colt

Some defensive shooters want a bullet that works through fluid dynamics rather than depending on mechanical expansion, especially through heavy clothing. This Lehigh Xtreme Penetrator loading delivers exactly that kind of consistent performance. The solid copper construction also appeals to shooters who want full weight retention. Every round meets SAAMI +P pressure and dimensional specifications for safe function in rated firearms. Browse Liberty Anno Supply’s full 45 Colt ammunition selection. Check our bulk savings page for case-quantity pricing. This ammunition is manufactured to SAAMI +P specifications. Liberty Anno Supply ships fast, so shooters can restock before their next range day or hunting trip.