TYM's Lonely Yankers Chat!

Published on November 26, 2020
Duration: 54:29

This video demonstrates why firing .40 S&W ammunition from a 10mm Auto firearm, specifically a 1911, is unreliable and unsafe. The instructor visually compares the two rounds, highlighting the difference in case length and how it affects chambering, firing pin engagement, and extraction. The demonstration shows that while a .40 S&W round may fit into a 10mm chamber, it will likely result in light primer strikes, failure to extract, and potential damage to the firearm's components, making it unsuitable for reliable function.

Chapters

  1. 04:50Can you fire .40 S&W from a 10mm?
  2. 05:13Demonstration: 10mm vs .40 S&W Rounds
  3. 07:36Visual Comparison in Barrel
  4. 07:51Why .40 S&W Won't Fire Reliably in 10mm
  5. 18:22Extractor Functionality with Wrong Caliber
  6. 30:13Safety and Reliability Concerns

Frequently Asked Questions

Can I safely fire .40 S&W ammunition from my 10mm pistol?

No, firing .40 S&W from a 10mm firearm is generally considered unreliable and unsafe. The dimensional differences, particularly case length, can lead to improper chambering, light primer strikes, failure to extract, and potential damage to your firearm. Always use the correct ammunition for your specific firearm model.

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