Chainfire! Is it dangerous?

Published on August 9, 2023
Duration: 10:55

This video delves into the phenomenon of 'chainfire' in percussion revolvers, specifically the 1860 Colt. It explains that chainfires, the simultaneous ignition of multiple chambers, are primarily caused by undersized projectiles failing to seal the chamber mouth. The host demonstrates that ignition often occurs from the front of the cylinder, not the rear percussion cap, and offers solutions like using correctly sized projectiles (.457 diameter balls or conical bullets) to prevent this dangerous malfunction.

Quick Summary

Chainfire in percussion revolvers is primarily caused by undersized projectiles failing to seal the chamber mouth, allowing flame to jump between chambers. Using correctly sized projectiles, like .457 diameter balls or conical bullets, is crucial for prevention. While grease and wadding can help, proper projectile fit is the most critical factor.

Chapters

  1. 00:00Introduction: 1860 Colt Revolver
  2. 00:28What is Chainfire?
  3. 01:21Dangers and Mechanics of Chainfire
  4. 03:21Historical vs. Modern Loading
  5. 04:44The Real Cause: Undersized Projectiles
  6. 06:56Visual Analysis of a Chainfire
  7. 08:28Modern Precautions & Recommendations

Frequently Asked Questions

What causes a chainfire in a percussion revolver?

The primary cause of chainfire in percussion revolvers is the use of undersized projectiles, such as round balls, that fail to properly seal the chamber mouth. This allows the flame from a fired cap to jump to adjacent chambers, igniting them simultaneously.

How can chainfires be prevented in black powder revolvers?

Prevention focuses on ensuring a proper seal. Use correctly sized projectiles, typically .457 diameter for .44 caliber revolvers, or properly fitting conical bullets. This creates a lead-to-steel seal that prevents flame propagation between chambers.

Are grease and wadding necessary to prevent chainfires?

While grease and wadding can help, they are not strictly necessary if the projectile is correctly sized. Historically, Colt's instructions advised against them. Modern methods can help reduce fouling but the projectile fit is paramount for preventing chainfires.

What are the dangers associated with chainfires?

Chainfires are dangerous because they can cause a significant, uncontrolled recoil. The simultaneous detonation can also lead to shrapnel being ejected, potentially damaging the firearm or injuring the shooter.

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