http://www.thefirearmblog.com/blog/2017/09/20/sw-500-explodes-shooters-hand/
Yeeeesh......that would make you change your pants.
Yeeeesh......that would make you change your pants.
My guess is an out of time cylinder.
The S&W X frames are built like bank vaults. If your pulling the trigger or cocking the hammer the Cylinder is rolling. Once it rolls to fire the mechanism locks into place. I just pulled mine out of the safe and I can't make it go into battery without the cylinder properly indexed.
Yours is probably a well maintained firearm.
The revolver in the story who knows.
Look at the spark splatter in the photo. That backsplatter is from the bullet being shaved as it passes the cylinder gap. It doesn't take much on a round as powerful as the 500 to get things moving.
A squib stuck in the barrel would of bulged the barrel.
How in the hell could you not know you had a squib with one of those? Maybe your hand/wrist/arm didn't hurt after you shot it?