How Deadly Is .45 ACP These Facts Will Shock Every 9mm Fan

Published on March 31, 2026
Duration: 19:02

This video provides an in-depth look at the .45 ACP cartridge, exploring its history, performance, and versatility. It debunks myths about its recoil, highlights its effectiveness in various firearms from the 1911 to submachine guns and carbines, and discusses its reloadability. The presenter, Sully from Line 45, emphasizes the cartridge's consistent power and control, making it a reliable choice for defense and competition.

Quick Summary

The .45 ACP cartridge is known for its manageable recoil, largely due to its lower operating pressure (around 21,000 PSI) and heavier bullet weight, which creates a rolling push rather than a sharp jolt. It's also naturally subsonic, making it excellent for suppressed firearms, and is considered one of the easiest cartridges to reload.

Chapters

  1. 00:00Introduction to .45 ACP
  2. 00:56Historical Significance and Feel
  3. 01:15Versatility Beyond the 1911
  4. 02:21Origins in the Philippines
  5. 03:01Browning's Design for Stopping Power
  6. 03:37Authority on Target
  7. 03:48World War I and the M1917 Revolver
  8. 04:25The Half-Moon Clip Solution
  9. 05:37Recoil Myths Debunked
  10. 06:04Low Pressure, Heavy Bullet
  11. 07:11Pushing the .45 ACP Further
  12. 07:37.45 Super Explained
  13. 08:07.460 Rowland Powerhouse
  14. 08:28.45 GAP: The Compact Contender
  15. 09:11Deep Dive: .45 GAP
  16. 11:07.45 ACP in Submachine Guns
  17. 11:46The Grease Gun's Effectiveness
  18. 12:04Modern SMGs and PCCs
  19. 12:41Suppression Advantage
  20. 12:49Reloading the .45 ACP
  21. 14:19Value at the Bench
  22. 14:29Battlefield Application: Tunnel Rats
  23. 15:14Tunnel Blast Concussion
  24. 16:11.45 ACP in Long Guns
  25. 16:21Marlin Camp Carbine
  26. 16:57Modern Pistol Caliber Carbines
  27. 17:21Lever Action .45 ACP
  28. 17:40Specialty Loads: Rat Shot
  29. 18:05Versatility and Relevance
  30. 18:12Conclusion: Consistent Power

Frequently Asked Questions

What makes the .45 ACP's recoil manageable?

The .45 ACP's recoil is generally considered manageable due to its lower operating pressure (around 21,000 PSI) and the use of heavier bullets. This combination results in a more of a rolling push rather than a sharp jolt, especially when fired from heavier firearms like steel-framed 1911s.

Why is the .45 ACP considered easy to reload?

The .45 ACP is easy to reload because of its straight-walled, rimless case design, which simplifies feeding into reloading presses. The cases are durable, readily available, and the cartridge's low pressure allows for excellent brass life and forgiveness during load development.

What are some historical firearms that utilize the .45 ACP?

The .45 ACP is famously associated with the M1911 pistol. It was also adapted for use in revolvers like the M1917, and became the standard for iconic submachine guns such as the Thompson and the M3 Grease Gun.

How does the .45 ACP perform in suppressed firearms?

The .45 ACP is naturally subsonic, meaning its standard loads travel below the speed of sound. This makes it an ideal cartridge for suppressed firearms, as it doesn't require special ammunition to achieve quiet operation, reducing muzzle blast and flash effectively.

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