Is This AMMO "The Same Thing?" Which one is BEST?
This video compares the Underwood Extreme Defender and Inceptor ARX 9mm ammunition through gel testing. Both projectiles demonstrated excellent disruption and penetration, achieving similar wound channels and stopping approximately 15-16 inches into the gel block. The Inceptor ARX, a lighter 65-grain projectile, achieved higher velocities (1550 fps average) compared to the 90-grain Underwood Extreme Defender (1268 fps average) when fired from a 3-inch barrel Sig Sauer P365. Despite material and design differences, their performance in gel was deemed comparable for practical purposes.













