This reminds me of shooting lessons I had long ago with the gentleman who taught me to shoot. I was a teenager. Up till then the biggest revolver I'd shot was his .357 which wasn't too bad, but I'd only shot a few rounds with it. What I didn't know was it was loaded with .38's.
After that he broke out his 44mag Ruger Blackhawk with an 8" barrel. He was a master and quickly showed me he could easily hit a 12" target at 100yards multiple times, no problem. When he handed it to me I thought it couldn't be much tougher than the .357 so I decided to shoot it one-handed Dirty Harry style because I'd recently saw the movie and thought it was cool. He warned me not to do it but I was cocky. He said "hold on tight now", and I squeezed the trigger. The next thing I knew the hammer was stopped about 2mm from the bridge of my nose right between my eyes and there was a small trickle of blood running down my nose. Had I reacted a nano-second later it would've surely broke my nose! From that point on I listened intently.
Probably the most pain I've ever felt was after quickly shooting three boxes in a row of hot 12ga., 00-buckshoot in a High Standard police riot wood-stocked shotgun I'd converted to a pistol-grip. That was 20 years ago and I don't think my wrist has ever been quite the same.
Capt. Robert Jaspers