The Underwood Ammo Xtreme Defender builds upon the proven performance of the Xtreme Penetrator Series, offering unmatched stopping power and barrier-blind performance. Engineered with an optimized nose flute, precise weight distribution and ideal velocity, this round delivers up to 18 inches of penetration while creating an enormous permanent wound cavity (PWC). Unlike traditional hollow points, the Xtreme Defender achieves expansion and devastating wound channels even after passing through barriers such as wallboard, sheet metal and automotive glass thanks to its solid copper construction. Nickel-plated brass casings enhance feeding reliability in all firearm actions, resist corrosion and offer easy clean-up for reloaders. Unlike traditional brass, these casings remain untarnished even when exposed to leather, moisture or other materials. Additionally, our flash-suppressed powder ensures uncompromised vision in low-light scenarios. Every Underwood Ammo round is rigorously tested using real-world firearms to guarantee top-tier performance in the most demanding conditions.