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 ballistic gel test comparing Hornady Custom 10mm 155gr XTP and Underwood XTP 10mm 155gr ammunition. The test reveals significant differences in velocity and terminal performance, with the Underwood load demonstrating superior expansion and penetration despite a slightly lower average velocity in this specific test. The instructor highlights that while both rounds use the same projectile, the loading differences result in distinct performance outcomes.

Quick Summary

In a ballistic gel test from a Glock 29, the Underwood XTP 10mm 155gr averaged 1359 FPS with significant expansion and 17 inches of penetration. The Hornady Custom 10mm 155gr XTP averaged 1263 FPS with minimal expansion and 24 inches of penetration, indicating the Underwood load offers superior terminal performance.

Frequently Asked Questions

What are the key differences between Hornady Custom 10mm 155gr XTP and Underwood 10mm 155gr XTP in a ballistic gel test?

In a ballistic gel test from a Glock 29, the Underwood 10mm 155gr XTP averaged 1359 FPS with significant expansion and 17 inches of penetration. The Hornady Custom 10mm 155gr XTP averaged 1263 FPS with minimal expansion and 24 inches of penetration, indicating the Underwood load offers superior terminal performance.

Which 10mm 155gr XTP ammunition performed better in the ballistic gel test?

The Underwood XTP 10mm 155gr ammunition performed significantly better in the ballistic gel test. It achieved higher average velocity (1359 FPS vs 1263 FPS), exhibited massive expansion, and penetrated 17 inches, whereas the Hornady Custom showed minimal expansion and penetrated 24 inches.

Does the projectile type affect performance in 10mm ammunition?

While both Hornady Custom and Underwood XTP 10mm 155gr use the exact same Hornady 155gr XTP projectile, the loading differences significantly impact performance. The Underwood load's higher velocity resulted in much better expansion and terminal ballistics compared to the lighter-loaded Hornady Custom.

What are the velocity differences between Hornady Custom and Underwood 10mm 155gr XTP from a Glock 29?

From a Glock 29 (3.8-inch barrel), the Hornady Custom 10mm 155gr XTP averaged 1263 FPS. The Underwood XTP 10mm 155gr averaged a higher 1359 FPS, demonstrating a notable velocity advantage for the Underwood load in this test.

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