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

Published on December 6, 2025
Duration: 12:47

This video provides an expert-level analysis of Underwood's 9mm +P 68 Grain Xtreme Defender ammunition through rigorous ballistic gel testing. The host, demonstrating high authority, uses professional equipment like a LabRadar chronograph to measure velocity and energy transfer across different firearm barrel lengths (Canik Mete MC9 3.1" vs. Glock 17 4.5"). The test simulates real-world conditions with a heavy clothing barrier and provides detailed insights into penetration depth and projectile integrity, concluding that the lightweight round offers consistent performance.

Quick Summary

Expert ballistic gel testing of Underwood 9mm +P 68gr Xtreme Defender ammunition shows consistent performance across different barrel lengths. From a 3.1-inch barrel, it averaged 1796 fps and 17.5" penetration, while a 4.5-inch barrel yielded 1886 fps and 17.75" penetration, with 100% weight retention and no projectile deformation.

Chapters

  1. 00:00Introduction and Setup
  2. 00:45Ammunition Overview
  3. 01:41Test Firearms
  4. 02:00Velocity Testing: Canik MC9
  5. 03:32Velocity Testing: Glock 17
  6. 05:45Ballistic Gel Results
  7. 09:32Projectile Analysis
  8. 11:40Final Assessment

Frequently Asked Questions

How did the Underwood 9mm +P 68gr Xtreme Defender perform in ballistic gel tests?

The Underwood 9mm +P 68gr Xtreme Defender demonstrated impressive performance, achieving 17.5-17.75 inches of penetration in ballistic gel through a clothing barrier, with 100% weight retention and no deformation of the solid copper fluted projectile.

What was the velocity of the Underwood 9mm +P 68gr Xtreme Defender from different barrel lengths?

From a 3.1-inch barrel (Canik Mete MC9), the average velocity was 1796 fps. From a 4.5-inch barrel (Glock 17), the average velocity increased to 1886 fps, showing the impact of barrel length.

Does barrel length significantly affect the performance of Underwood 9mm +P Xtreme Defender?

While the Glock 17's longer 4.5-inch barrel produced higher velocity and energy compared to the Canik MC9's 3.1-inch barrel, the penetration depth in ballistic gel remained nearly identical, suggesting consistent effectiveness across common handgun barrel lengths.

What are the key features of the Underwood 9mm +P 68gr Xtreme Defender ammunition?

This ammunition features a lightweight, solid copper fluted projectile designed for high velocity and deep penetration without expansion. It offers 100% weight retention and is tested with a heavy clothing barrier simulation.

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