Underwood 38 Special +p 125gr XTP Clear Ballistics Gel Test | J Frame and 4 5/8” Barrel

Published on July 30, 2024
Duration: 9:01

This video details a ballistic gel test of Underwood 38 Special +P 125gr XTP ammunition fired from both a J-frame revolver and a 4 5/8" barreled handgun. The test evaluates bullet expansion and penetration through four layers of denim, providing velocity data and visual evidence of terminal performance. The instructor notes the effectiveness of the XTP bullet for penetration, even from a snub-nosed platform.

Quick Summary

In a ballistic gel test with four layers of denim, Underwood 38 Special +P 125gr XTP ammunition achieved approximately 17.75 inches of penetration from a J-frame revolver and 23.25 inches from a 4 5/8" barreled handgun. The 125gr XTP bullet demonstrated expansion from both platforms, with the longer barrel yielding greater velocity and penetration.

Chapters

  1. 00:41Introduction and Setup
  2. 00:50Ammunition Details: Underwood 38 Spl +P 125gr XTP
  3. 01:39Test Setup: Denim Layers and Chronograph
  4. 01:53J-Frame Test: First Shot
  5. 02:09J-Frame Velocity and Wound Track Analysis
  6. 03:08J-Frame Test: Second Shot
  7. 03:35J-Frame Penetration Measurement
  8. 03:55J-Frame Recoil Observation
  9. 04:30Transition to Longer Barrel Test
  10. 05:07Sponsor Plug: Target Sports USA
  11. 05:07Sponsor Plug: Veter Holsters
  12. 05:32Longer Barrel Test: First Shot
  13. 05:53Longer Barrel Penetration Measurement
  14. 06:26Longer Barrel Test: Second Shot (Suspected Chrono Issue)
  15. 06:49Longer Barrel Penetration Measurement (Second Shot)
  16. 07:10Bullet Extraction and Examination
  17. 07:16J-Frame Bullet Analysis
  18. 07:22Longer Barrel Bullet Analysis
  19. 07:50Performance Summary and Conclusion

Frequently Asked Questions

What was the penetration depth of Underwood 38 Special +P 125gr XTP in ballistic gel?

In a ballistic gel test with four layers of denim, Underwood 38 Special +P 125gr XTP ammunition achieved approximately 17.75 inches of penetration from a J-frame revolver and 23.25 inches from a 4 5/8" barreled handgun.

Did the Underwood 125gr XTP bullet expand in the gel test?

Yes, the 125gr XTP bullet from Underwood Ammunition demonstrated expansion from both the J-frame and the longer-barreled handgun. While not uniformly expanded from the J-frame, it showed clear signs of expansion.

What velocities were recorded for Underwood 38 Special +P 125gr XTP?

Velocities recorded during the test were 1107 fps from the J-frame revolver. For the 4 5/8" barreled handgun, initial readings were around 1207 fps, with a suspected accurate reading of 1260 fps.

How does the barrel length affect the performance of Underwood 38 Special +P 125gr XTP?

The test showed a significant difference in penetration based on barrel length. The 4 5/8" barrel resulted in 23.25 inches of penetration, considerably more than the 17.75 inches achieved by the J-frame, highlighting the velocity advantage.

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