The Name Says It All!...9MM +P+ 115 Grain Xtreme Penetrator Self-Defense AMMO Ballistic Gel Test!

Published on March 7, 2026
Duration: 12:02

This guide details a comprehensive ballistic gel test procedure for self-defense ammunition, specifically the Underwood 9mm +P+ 115 Grain Xtreme Penetrator. It covers the setup, execution, and analysis of the test, including firearm selection (Canik Mete MC9 and Glock 17), velocity measurements, penetration depth in gel with clothing barriers, and examination of the recovered projectile. The expert instruction emphasizes understanding ammunition performance characteristics for defensive applications.

Quick Summary

The Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition delivers deep penetration, exceeding 32 inches in ballistic gel from a 3.1-inch barrel and 28 inches from a 4.5-inch barrel. Its solid copper, fluted-tip design causes significant hydraulic disruption without expansion, offering potent terminal performance but raising considerations about over-penetration.

Chapters

  1. 00:00Introduction and Test Overview
  2. 00:29Ballistic Gel Setup Details
  3. 00:44Ammunition Introduction and Design
  4. 01:13Previous Tests and Performance Expectations
  5. 01:59Firearms Used for Testing
  6. 02:26Canik Mete MC9 Velocity Test
  7. 03:48Glock 17 Velocity Test
  8. 04:56Ballistic Gel Test - Canik MC9
  9. 05:37Ballistic Gel Test - Glock 17
  10. 06:17Penetration and Disruption Analysis
  11. 08:39Recovered Projectile Examination
  12. 09:31Conclusion and Personal Preference

Frequently Asked Questions

What is the performance of Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition in ballistic gel?

The Underwood 9mm +P+ 115 Grain Xtreme Penetrator demonstrated deep penetration, exceeding 32 inches from a Canik MC9 and 28 inches from a Glock 17, with significant hydraulic disruption and no expansion of the solid copper projectile.

How does barrel length affect the velocity of Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition?

From a 3.1-inch barrel (Canik MC9), the average velocity was 1258 FPS, while a 4.5-inch barrel (Glock 17) yielded a higher average of 1318 FPS, demonstrating the impact of barrel length on muzzle velocity.

What are the key design features of the Underwood Xtreme Penetrator bullet?

The Xtreme Penetrator is a solid copper bullet featuring a fluted tip designed to enhance hydraulic disruption upon impact, promoting significant tissue cavitation without relying on traditional expansion mechanisms.

Is the Underwood 9mm +P+ 115 Grain Xtreme Penetrator suitable for self-defense?

The ammunition offers excellent penetration and disruption, making it effective for barrier penetration. However, its deep penetration may be a concern for over-penetration in some self-defense scenarios, a factor to consider based on individual needs and environments.

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