.45 vs. 9mm... UNDERWATER

Published on October 9, 2020
Duration: 5:33

This video from RECOILtv delves into the performance of 9mm versus .45 ACP ammunition when fired underwater. An experienced speaker analyzes reliability and effectiveness, noting that .45 ACP traveled twice the distance of 9mm, likely due to its tendency to remain a ball round. However, the 1911 platform experienced frequent stoppages with .45 ACP underwater, leading to a recommendation for Glocks and ball ammunition for such specific, albeit unusual, applications.

Quick Summary

Underwater ballistics tests revealed .45 ACP traveled twice the distance of 9mm, likely due to maintaining its ball round integrity. However, the 1911 platform showed poor reliability with .45 ACP underwater, experiencing frequent stoppages. Glocks with ball ammunition are recommended for such extreme conditions.

Chapters

  1. 00:00Previous Episode Context
  2. 00:10Caliber Comparison Setup
  3. 01:47Handing Over Firearms
  4. 04:32Ammunition Types and Results
  5. 04:58Reliability Concerns and Recommendations

Frequently Asked Questions

How does 9mm compare to .45 ACP when fired underwater?

Underwater testing showed that .45 ACP traveled approximately twice the distance of 9mm. This is likely because .45 ACP tends to remain a ball round, maintaining its integrity, while 9mm may perform differently.

Are 1911 pistols reliable for underwater shooting?

According to the test, the 1911 platform experienced frequent "stovepipe" stoppages when firing .45 ACP underwater, disqualifying it as a reliable option for such conditions.

What firearm and ammunition are recommended for underwater use?

For shooting underwater, the speaker recommends using a Glock firearm with ball ammunition. This combination was found to be more reliable than other tested options in the specific scenario.

What factors affect underwater bullet performance?

The consistency of the bullet's form, specifically whether it remains a ball round, appears to be a significant factor. .45 ACP's tendency to maintain its ball round integrity contributed to its longer travel distance underwater compared to 9mm.

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