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 expert-level analysis details a ballistic gel test of Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition. The test, conducted by an experienced firearms instructor, evaluates performance from different barrel lengths and provides critical data on velocity, penetration, and terminal effects. The findings offer valuable insights for selecting defensive handgun ammunition.

Quick Summary

Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition delivers exceptional performance, achieving velocities up to 1318 FPS and over 440 ft-lb of energy. In ballistic gel tests with a clothing barrier, it demonstrated extreme penetration, exceeding 32 inches from a 3.1-inch barrel and 28 inches from a 4.5-inch barrel, with significant disruption.

Chapters

  1. 00:00Introduction & Test Setup
  2. 00:29Ballistic Gel & Clothing Barrier
  3. 00:44Underwood Xtreme Penetrator Ammo Details
  4. 01:13Previous Tests & Performance Expectations
  5. 01:59Firearms Used: Canik MC9 & Glock 17
  6. 02:26Canik Mete MC9 Velocity Test Results
  7. 03:48Glock 17 Velocity Test Results
  8. 04:56Ballistic Gel Test: Canik MC9 Impact
  9. 05:37Ballistic Gel Test: Glock 17 Impact
  10. 06:17Penetration & Disruption Analysis
  11. 08:39Recovered Projectile Examination
  12. 09:31Conclusion & Personal Preference

Frequently Asked Questions

What are the key performance characteristics of Underwood 9mm +P+ 115 Grain Xtreme Penetrator ammunition?

This ammunition features a solid copper fluted design for hydraulic disruption. It achieved velocities of 1258 FPS from a 3.1-inch barrel and 1318 FPS from a 4.5-inch barrel, delivering over 400 ft-lb of energy. It demonstrated extreme penetration in ballistic gel, exceeding 32 inches from the shorter barrel.

How did the Underwood Xtreme Penetrator perform in ballistic gel tests with a clothing barrier?

When fired through denim, fleece, and cotton t-shirt layers into ballistic gel, the Xtreme Penetrator showed significant disruption. The Canik MC9 round over-penetrated both 16-inch gel blocks, while the Glock 17 round penetrated 28 inches, stopping within the second block.

What was the recovered projectile analysis for the 9mm Xtreme Penetrator?

The recovered 115-grain solid copper Xtreme Penetrator bullet showed no expansion or significant deformation. It retained its exact weight of 115.0 grains and measured 0.355 inches in width and 0.636 inches in length, highlighting its robust construction.

Which firearms were used to test the Underwood 9mm +P+ 115 Grain Xtreme Penetrator?

The test utilized a Canik Mete MC9 with a 3.1-inch barrel and a Glock 17 with a 4.5-inch barrel. These firearms were chosen to evaluate the ammunition's performance across different barrel lengths and their impact on velocity and energy.

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