Underwood Xtreme Defender 357 Sig Ammo 65 Grain Lehigh Xtreme Defense Fluted Box of 20

Overview

Underwood Xtreme Defender ammunition is chambered in .357 Sig and utilizes a 65-grain solid monolithic copper bullet. Packaged in boxes of 20 rounds, this load features nickel-plated brass cases that are boxer-primed, non-corrosive, and reloadable. The ammunition is designed with flash-suppressed powder to preserve night vision during low-light engagements. The bullet design incorporates radial nose flutes that direct hydraulic energy inward and create sharp cutting edges, generating a large permanent wound cavity and deep penetration through intermediate barriers while maintaining solid structural integrity. It achieves a muzzle velocity of 2,100 fps and a muzzle energy of 637 ft-lbs.

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