Several of us used to set up a combat shoot in a box canyon north of Phoenix, years ago. One of us would set up a layout of plywood "bad" guys mixed with "good" guys, then the others would shoot the course, being scored by the one who set up the targets. Then we'd switch & re-arrange. One day one of our regulars, we'll call him "Al" brought another guy with him, we'll call him "Mike".
Mike used a 4" Mdl 29 .44mag, and was doing OK, then he did a reload. He turned a corner where he faced a couple bad guys and snapped off 5 misfires about as fast as possible. I got him to stop before he touched off the sixth. Investigation showed he had missed putting powder in a row of 5 cases in his reloading block, and had stacked 5 bullets in the barrel with the primers, and that sixth round was hot. Had he fired that last round.... scary!
Al later admitted they were doing hash oil on ice cream during their reloading session.
A couple weeks later I was talking with a local gunsmith and related the story. He got an odd look on his face and showed me a Ruger Single Action in .357 with 5 bullets lodged in the barrel.
Knowing that Al had an identical gun, I asked if the owners name was Al- and it was! Exact same reloading scenario on the same night.
After confirming the story with Al, he was asked not to rejoin our shooting group.
You wonder how these people survive.