Heavy-Hittin' Lightweights!...9MM +P Underwood Xtreme Defender 68 Grain Ballistic Gel AMMO Test!

Published on December 6, 2025
Duration: 12:47

This comprehensive ballistic gel test evaluates Underwood's 9mm +P 68 Grain Xtreme Defender ammunition. The Tools&Targets host demonstrates its performance through a heavy clothing barrier, comparing results from a Canik Mete MC9 (3.1" barrel) and a Glock 17 (4.5" barrel). The test highlights impressive velocity, energy transfer, and deep penetration with zero projectile deformation, showcasing the effectiveness of this lightweight, solid copper fluted round.

Quick Summary

The Underwood 9mm +P 68 Grain Xtreme Defender ammunition achieved impressive results in ballistic gel tests, penetrating approximately 17.5-17.75 inches with 100% weight retention and no deformation. Velocities averaged 1796 fps from a 3.1" barrel and 1886 fps from a 4.5" barrel, showcasing its effectiveness for self-defense.

Chapters

  1. 00:00Introduction & Test Setup
  2. 00:45Underwood 9mm +P Xtreme Defender Overview
  3. 01:41Test Firearms: Canik MC9 vs Glock 17
  4. 02:00Velocity Test: Canik MC9 (3.1" Barrel)
  5. 03:32Velocity Test: Glock 17 (4.5" Barrel)
  6. 05:45Ballistic Gel Results & Penetration
  7. 09:32Projectile Analysis & Weight Retention
  8. 11:40Final Assessment & Conclusion

Frequently Asked Questions

What is the performance of Underwood 9mm +P 68 Grain Xtreme Defender ammunition in ballistic gel?

In ballistic gel tests with a heavy clothing barrier, the Underwood 9mm +P 68 Grain Xtreme Defender ammunition demonstrated excellent performance. It achieved deep penetration of approximately 17.5-17.75 inches with 100% weight retention and no projectile deformation, indicating consistent energy transfer.

How does barrel length affect the velocity of Underwood 9mm +P Xtreme Defender ammo?

Barrel length significantly impacts velocity. Fired from a 3.1-inch barrel, the ammo averaged 1796 fps, while a 4.5-inch barrel yielded 1886 fps. This difference resulted in higher muzzle energy from the longer barrel.

Is Underwood 9mm +P 68 Grain Xtreme Defender suitable for self-defense?

Based on this ballistic gel test, the Underwood 9mm +P 68 Grain Xtreme Defender appears highly suitable for self-defense. Its solid copper fluted design ensures deep penetration and reliable energy transfer without over-penetration concerns often associated with expanding bullets.

What are the key features of the Underwood 9mm +P 68 Grain Xtreme Defender round?

This round features a 68-grain solid copper fluted projectile designed for high velocity and deep penetration without expansion. It is rated for 9mm +P pressures, delivering significant energy transfer suitable for defensive applications.

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