Both Are LIGHT, But Which One Is RIGHT?...10MM Hornady Custom VS Underwood XTP Ballistic Gel Test!

Published on March 28, 2025
Duration: 14:21

This video provides a detailed ballistic gel test comparing Hornady Custom 155gr XTP and Underwood XTP 155gr ammunition in 10mm Auto. The instructor, with apparent experience in firearms testing, highlights significant differences in velocity, expansion, and penetration between the two loads, despite using the same projectile. The Underwood load demonstrated superior performance due to higher velocity.

Quick Summary

In a ballistic gel test comparing 10mm Hornady Custom 155gr XTP and Underwood XTP 155gr, the Underwood load achieved a higher average velocity of 1359 fps compared to the Hornady's 1263 fps from a Glock 29. This velocity difference resulted in the Underwood showing massive expansion and 17 inches of penetration, while the Hornady had minimal expansion and 24 inches of penetration.

Chapters

  1. 00:00Introduction & Channel Milestone
  2. 00:26Test Setup: 10mm Ballistic Gel
  3. 00:42Ammunition Overview: Hornady Custom vs Underwood XTP
  4. 01:03Hornady Custom 155gr XTP Specs
  5. 01:28Underwood XTP 155gr Specs & Past Performance
  6. 02:09Cartridge Comparison: Brass vs Nickel, Primer Size
  7. 02:57Firearm Used: Glock 29 (Short Barrel)
  8. 03:20Velocity Testing: Hornady Custom
  9. 04:33Hornady Custom Velocity Results & Analysis
  10. 05:04Velocity Testing: Underwood XTP
  11. 06:01Underwood XTP Velocity Results & Analysis
  12. 06:41Ballistic Gel Test Setup
  13. 06:54Hornady Custom Gel Test Firing
  14. 07:44Underwood XTP Gel Test Firing
  15. 07:57Ballistic Gel Results: Hornady Custom Analysis
  16. 09:04Ballistic Gel Results: Underwood XTP Analysis
  17. 10:38Projectile Examination: Hornady vs Underwood
  18. 11:10Projectile Measurements & Expansion
  19. 11:5110mm 155gr Showdown: Final Verdict
  20. 12:46Conclusion & Viewer Engagement

Frequently Asked Questions

What are the key differences between Hornady Custom 155gr XTP and Underwood XTP 155gr 10mm ammunition?

While both use the same Hornady 155gr XTP projectile, the Underwood load significantly outperforms the Hornady Custom in velocity (1359 fps vs. 1263 fps from a Glock 29). This higher velocity leads to much better expansion and disruption in ballistic gel for the Underwood, despite less penetration.

How did the Hornady Custom 155gr XTP 10mm perform in ballistic gel?

The Hornady Custom 155gr XTP 10mm, averaging 1263 fps from a Glock 29, showed minimal expansion in ballistic gel and penetrated 24 inches. It did not perform as expected, with the instructor noting it lacked the velocity for optimal performance.

What were the results of the Underwood XTP 155gr 10mm ballistic gel test?

The Underwood XTP 155gr 10mm, averaging 1359 fps from a Glock 29, demonstrated excellent performance in ballistic gel. It achieved massive expansion and 17 inches of penetration, with the instructor calling it a top-tier 10mm carry round.

Does primer size affect the performance of 10mm ammunition?

The video notes that Hornady uses small primers in their 10mm loads, while Underwood uses large primers. While this is a consideration for reloaders, the instructor suggests it does not significantly impact the terminal performance of the ammunition in this test.

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