20rds – 9mm +P+ Underwood 115gr. Xtreme Penetrator Ammo Details

Looking for the most powerful 9mm ammo for self-defense? Then it’s time to step it up to 9mm +P+. This round’s chamber pressure is so high that SAAMI (the authority on such matters) doesn’t even have specifications for it! That means you must only fire it in pistols or carbines that you’re sure can handle it. (Note that the manufacturer specifically recommends against using an aftermarket SIG P365 barrel.)

This cartridge doesn’t just push its 115 grain bullet extra hard. That bullet just so happens to be the Xtreme Penetrator: a solid copper monolithic which lacks a hollow point nose cavity, and which therefore excels at piercing barriers without losing its capacity for devastating terminal performance. Instead of mushrooming, the Xtreme Penetrator engages, pressurizes, and blasts soft tissue outward laterally, which results in a tremendous (and debilitating) wound column.

Nickel-plated brass cases for added corrosion resistance and smoother cycling. Low-flash propellant to conserve eyesight’s acclimation to darkness. The American-made quality Underwood’s so famous for. They’re all yours when you invest in this absolute trogglehumper of a cartridge.