Underwood Ammo Xtreme Penetrator .357 Magnum 140gr — 20rd

Description

Underwood Ammo partners with Lehigh Defense to produce the Xtreme Penetrator line for .357 Magnum handgun platforms. This offering features a CNC-machined, monolithic copper projectile with a profile engineered to support deep, consistent penetration while maintaining reliable magazine feeding. Rounds are loaded into nickel‑plated brass cases and packaged in 20-round boxes. The design is intended for users seeking a solid copper option for hunting and applications requiring barrier performance and consistent terminal behavior.

Key Specifications

• The caliber is .357 Magnum.
• The bullet weight is 140 grains.
• The bullet type is copper solid (monolithic).
• Packaging is 20 rounds per box.
• Boxes per case: 10.
• The listed muzzle velocity is 1550 fps.
• The listed muzzle energy is 747 ft lbs.
• The case material is nickel-plated brass.
• Reloadable: Yes.
• Application indicated as Medium-Large Game.

This Xtreme Penetrator load offers a durable, lead‑free copper construction and a nose profile intended to support consistent feeding and deep penetration through common barriers. For shooters who prioritize a monolithic bullet for hunting or barrier‑resistant performance, this cartridge provides a purpose‑built option with established velocity and energy figures in a field‑ready 20‑round box.

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