Firing the Wrong Caliber

Published on December 5, 2013
Duration: 10:27

This expert guide details the dangerous consequences of firing incorrect calibers in handguns, as demonstrated by firearms instructor Matt Carriker. It covers firing .380 ACP in a 9mm, 9mm in a .40 S&W, and .223 Remington in a .40 S&W, highlighting malfunctions like failure to cycle, bulged casings, and blown-out necks due to improper headspacing and lack of chamber support. The video emphasizes the critical importance of using the correct ammunition for firearm safety and function.

Quick Summary

Firing incorrect caliber ammunition in firearms is extremely dangerous. A .380 in a 9mm may not cycle, 9mm in a .40 S&W can cause severe case bulging, and .223 in a .40 S&W results in a deformed casing and reduced performance. Always use the correct caliber for safety and function.

Chapters

  1. 00:11Intro to Caliber Testing Experiment
  2. 00:16Weapons and Calibers Overview (.380 vs 9mm)
  3. 00:45Comparing .380 ACP and 9mm Ammunition
  4. 01:21Test Fire: .380 in 9mm Ruger
  5. 02:05Preparing 9mm in .40 Glock
  6. 03:52Test Fire: 9mm in .40 Glock (Bulged Brass)
  7. 04:51Loading .223 into .40 Glock
  8. 07:22Test Fire: .223 from .40 Glock
  9. 08:48Proper .223 Rifle Fire Comparison

Frequently Asked Questions

What happens if you fire a .380 ACP round in a 9mm handgun?

Firing a .380 ACP in a 9mm handgun may result in a discharge, but the firearm will likely fail to cycle the slide. The spent casing often remains lodged in the chamber because the .380 lacks the power to operate the action, creating a malfunction.

Can you fire 9mm ammunition from a .40 S&W pistol?

While a 9mm cartridge might chamber in a .40 S&W pistol (often held by the extractor), firing it is dangerous. The unsupported case can bulge severely, and the firearm may not cycle properly. This mismatch compromises safety and firearm function.

Is it safe to fire a .223 Remington rifle round from a handgun?

Firing a .223 Remington round from a handgun not designed for it, like a .40 S&W Glock, is extremely unsafe. It results in a severely deformed casing (blown neck, bulged body) and significantly reduced projectile velocity and penetration, posing a risk of firearm damage and injury.

Why is using the correct ammunition caliber crucial for firearms?

Using the correct ammunition caliber ensures proper headspacing, chamber support, and firearm cycling. Mismatched calibers can lead to dangerous malfunctions like case ruptures, stovepipes, failure to fire, and potentially catastrophic firearm failure, causing serious injury.

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