Expansion Not Required...Underwood Xtreme Defender 9MM +P+ Self-Defense Ammo Ballistic Gel Test!
This video details a ballistic gel test of Underwood Ammo's 9mm +P+ Extreme Defender Platinum Edition ammunition. The test evaluates velocity and penetration through a heavy clothing barrier using two different firearm barrel lengths. The instructor provides insights into the performance characteristics of solid copper fluted projectiles, comparing them to traditional expanding rounds.













