Is The 45 AUTO Really as Deadly As History Says it is?

Published on August 24, 2025
Duration: 15:05

This guide details the process of evaluating the terminal ballistics of the .45 Auto cartridge, as demonstrated by Garand Thumb. It covers setting up a comprehensive testing environment with high-speed cameras and simulated tissue targets to analyze various ammunition types, from standard FMJ to advanced hollow points. The analysis aims to demystify the legendary stopping power of the .45 Auto by comparing its performance against modern standards and other calibers like 9mm.

Quick Summary

Garand Thumb's ballistic tests reveal the .45 Auto is indeed deadly, with FMJ rounds showing deep penetration and hollow points expanding significantly. While it lives up to much of its legendary status, modern 9mm ammunition has closed the performance gap, making caliber choice a balance between individual round energy and magazine capacity.

Chapters

  1. 00:21Intro: .45 Auto Myth & History
  2. 01:01Testing Methodology Explained
  3. 03:01Ammunition Selection for Test
  4. 04:05Standard FMJ Ballistics Test
  5. 05:11Defensive Hollow-Point Performance
  6. 07:47Comparison with 9mm
  7. 09:59Meat Target Devastation
  8. 13:13Final Assessment & Conclusion

Frequently Asked Questions

How does the .45 Auto perform in ballistic tests compared to historical claims?

Ballistic tests show the .45 Auto is highly effective, with FMJ rounds achieving deep penetration and hollow points expanding significantly. While it lives up to much of its legendary status, modern 9mm ammunition has closed the performance gap considerably.

What equipment is used to test the terminal ballistics of the .45 Auto?

The testing utilizes a Phantom high-speed camera for detailed analysis of bullet impacts, ballistics gelatin to simulate tissue, and a specialized 'meat target' composed of pork loin, ribs, and grapefruit to mimic realistic anatomical damage.

How does .45 Auto defensive ammunition compare to standard FMJ rounds?

Defensive hollow-point .45 Auto rounds, like Federal HST and Underwood, demonstrate superior performance by expanding upon impact, creating larger wound cavities than standard FMJ rounds, which tend to penetrate deeply without significant expansion.

Is the .45 Auto still relevant against modern 9mm ammunition?

Yes, the .45 Auto remains a potent cartridge, especially with modern defensive loads. However, advancements in 9mm ammunition have made it a highly competitive alternative, often offering a balance between effective terminal ballistics and greater magazine capacity.

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