Drag Race!...9mm +P+ VS .357 Sig 115 Grain Underwood Self-Defense AMMO Ballistic Gel Test!

Published on February 14, 2025
Duration: 14:52

This video details a ballistic gel test comparing 9mm +P+ and .357 SIG 115-grain Underwood self-defense ammunition. The instructor, with apparent expertise in ballistics testing, conducts velocity measurements using a Labradar and analyzes projectile performance in gel blocks behind a clothing barrier. The test reveals significant differences in penetration and expansion, with the .357 SIG demonstrating superior penetration while the 9mm showed impressive expansion but limited depth.

Quick Summary

In a ballistic gel test comparing Underwood 115-grain .357 SIG and 9mm +P+ ammunition from short barrels, the .357 SIG achieved 14 inches of penetration with good expansion. The 9mm +P+ penetrated 9.5 inches with excellent expansion but less depth, though it retained its full weight.

Chapters

  1. 00:00Introduction & Test Setup
  2. 00:249mm vs .357 SIG Comparison
  3. 01:00.357 SIG Ammunition Details
  4. 01:259mm +P+ Ammunition Details
  5. 02:01Previous Test Data & Expectations
  6. 02:33Test Firearms & Barrel Lengths
  7. 03:01.357 SIG Velocity Testing
  8. 04:13.357 SIG Average Velocity Results
  9. 04:359mm +P+ Velocity Testing
  10. 05:199mm +P+ Average Velocity Results
  11. 06:23Ballistic Gel Test - Firing
  12. 06:56Gel Test Results - Initial Observation
  13. 07:42Gel Test Analysis - Unexpected Results
  14. 08:03.357 SIG Gel Performance
  15. 08:419mm Gel Performance
  16. 09:14Penetration Depth Comparison
  17. 09:40Projectile Close-up
  18. 10:37Projectile Examination
  19. 11:27Projectile Measurements & Weight
  20. 12:19Final Verdict & Ammunition Comparison
  21. 13:35Test Takeaways & Surprises
  22. 14:06Viewer Engagement & Call to Action

Frequently Asked Questions

What were the average velocities for the Underwood 115-grain .357 SIG and 9mm +P+ ammunition from short barrels?

The Underwood 115-grain .357 SIG achieved an average velocity of 1416 FPS from a 3.4-inch barrel. The Underwood 115-grain 9mm +P+ averaged 1400 FPS from a 3.1-inch barrel, matching its advertised speed.

How did the Underwood 115-grain .357 SIG and 9mm +P+ ammunition perform in ballistic gel tests?

The .357 SIG penetrated 14 inches with good expansion and minimal jacket fragmentation. The 9mm +P+ penetrated 9.5 inches with excellent expansion but less depth, retaining its full weight.

Which ammunition type was considered the winner in the ballistic gel test between .357 SIG and 9mm +P+?

The .357 SIG was declared the winner primarily due to its superior penetration depth (14 inches) compared to the 9mm +P+ (9.5 inches), despite the 9mm showing excellent expansion.

What were the measured expanded diameters for the tested ammunition?

The .357 SIG projectile expanded to diameters between 0.547 and 0.567 inches. The 9mm +P+ projectile expanded slightly more, measuring between 0.608 and 0.614 inches.

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