10MM vs .40 S&W! Hornady Critical Duty Ballistic Gel Test Using The Glock 20 & Glock 22!

Published on June 12, 2022
Duration: 11:59

This guide details a ballistic gel test comparing 10mm Auto and .40 S&W using Hornady Critical Duty 175gr FlexLock ammunition fired from Glock 20 and Glock 22 pistols, respectively. The test evaluates velocity, penetration, expansion, and weight retention, providing expert insights into the real-world performance of these defensive calibers. The instruction comes from an experienced firearms instructor demonstrating a thorough understanding of ballistic testing methodologies.

Quick Summary

In a ballistic gel test comparing 10mm Auto and .40 S&W using Hornady Critical Duty 175gr FlexLock from Glock 20 and 22, the 10mm showed superior expansion and energy, while the .40 S&W had slightly more penetration. Actual velocities differed from advertised, with the 10mm often being 'watered down'.

Chapters

  1. 00:00Introduction to Ballistic Gel Test
  2. 00:11Test Setup Overview
  3. 00:27Ammunition and Firearm Introduction
  4. 01:27Previous Test Context
  5. 02:04.40 S&W Velocity Test
  6. 02:32.40 S&W Velocity Results
  7. 02:5710mm Velocity Test
  8. 03:2210mm Velocity Results and Comparison
  9. 04:19Ballistic Gel Shooting: .40 S&W
  10. 04:47Ballistic Gel Shooting: 10mm
  11. 05:46Gel Performance Analysis
  12. 07:12Penetration Measurements
  13. 07:50Expanded Projectile Comparison
  14. 08:28Weight Retention
  15. 09:01Expansion Measurements
  16. 09:22Final Summary and Critique
  17. 10:02Overall Test Conclusion
  18. 11:00Outro and Channel Support

Frequently Asked Questions

How did the 10mm Auto perform against the .40 S&W in the ballistic gel test?

The 10mm Auto Hornady Critical Duty showed better expansion (0.598" vs 0.549") and energy (479 ft-lb vs 399 ft-lb), while the .40 S&W achieved slightly more penetration (18" vs 16.25"). Both retained excellent weight.

What were the actual tested velocities for the 10mm and .40 S&W?

The .40 S&W averaged 1013 fps, meeting its advertised 1010 fps. The 10mm averaged 1110 fps, falling short of its advertised 1150 fps, indicating common commercial loads are often 'watered down'.

Which firearm was used for each caliber in the test?

A Glock 20 with a 4.5-inch barrel was used for the 10mm Auto tests, and a Glock 22 with a 4.5-inch barrel was used for the .40 S&W tests, ensuring a fair comparison.

What are the key takeaways regarding Hornady Critical Duty ammunition?

Hornady Critical Duty rounds, in both 10mm and .40 S&W, demonstrated excellent weight retention and reliable expansion. They prioritize barrier penetration, offering solid performance for self-defense applications.

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