InRange is entirely viewer supported, please consider it:
  / inrangetv  

A chainfire is when multiple chambers of a percussion revolver fire simultaneously; this can be a dangerous event, but usually is not. Regardless, it is not desirable and the "common knowledge" is that the only way to prevent this is with a felt wad and/or grease covering the chamber mouths...historically, however, they didn't do that. So what's the deal?