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 expert-level ballistic gel test compares Hornady Critical Duty 10mm Auto and .40 S&W, both 175-grain FlexLock projectiles, fired from Glock 20 and Glock 22 pistols respectively. The test meticulously measures velocity, penetration, expansion, and weight retention, providing valuable data for self-defense ammunition selection. The analysis highlights the performance differences and discusses the common issue of 'watered-down' commercial 10mm ammunition.

Quick Summary

In a ballistic gel test, Hornady Critical Duty 10mm Auto (175gr) from a Glock 20 achieved 1110 fps, 16.25" penetration, and 0.598" expansion. The .40 S&W (175gr) from a Glock 22 averaged 1013 fps, penetrated 18", and expanded to 0.549". The 10mm offered more energy dump, while the .40 S&W had slightly more penetration.

Chapters

  1. 00:00Introduction: 10mm vs .40 S&W Gel Test
  2. 00:11Test Setup and Ammunition Overview
  3. 00:27Firearms: Glock 20 (10mm) & Glock 22 (.40 S&W)
  4. 02:04.40 S&W Velocity Test Results
  5. 02:5710mm Velocity Test Results
  6. 04:19Ballistic Gel Shooting: .40 S&W Impact
  7. 04:47Ballistic Gel Shooting: 10mm Impact
  8. 05:46Gel Performance Analysis: Wound Channels
  9. 07:12Penetration Measurements: 10mm vs .40 S&W
  10. 07:50Expanded Projectile Comparison
  11. 08:28Weight Retention Analysis
  12. 09:01Expansion Measurements
  13. 09:22Final Summary and Critique
  14. 10:02Overall Test Conclusion

Frequently Asked Questions

What are the key performance differences between 10mm Auto and .40 S&W in this ballistic gel test?

The 10mm Auto demonstrated greater expansion (0.598" vs 0.549") and higher energy (479 ft-lb vs 399 ft-lb) compared to the .40 S&W. However, the .40 S&W achieved slightly deeper penetration (18" vs 16.25"). Both retained nearly all their original weight.

How did the tested velocities compare to the advertised velocities for Hornady Critical Duty?

The 10mm Auto averaged 1110 fps, falling short of its 1150 fps advertised velocity. The .40 S&W averaged 1013 fps, meeting its 1010 fps advertised velocity. This suggests commercial 10mm ammo may be 'watered down'.

Which firearm was used for each caliber in the ballistic gel 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. This setup ensured a fair comparison between the calibers.

What were the penetration depths and expansion diameters for the 10mm and .40 S&W Critical Duty rounds?

The 10mm penetrated 16.25 inches with an average expansion of 0.598 inches. The .40 S&W penetrated 18 inches with an average expansion of 0.549 inches. Both rounds showed good expansion for barrier-blind ammunition.

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