Have never had a semi put out of action by any kind of failure ... I bought a Taurus 617, snubbie 7-shot steel .357 mag a number of years ago, thought it would be fun .. it was, until it locked up solid after 20 or so shots ... wasn't really a mechanical failure; the cylinder-barrel gap was so tight that when heat expanded the metal, it jammed ... letting it cool for 10 minutes or so freed it up until a few more rounds went through and it jammed again ... a trip to a 'smith for a bit of work, along with a trigger job, and it's one of my favorite range guns ...
"The gun has been called the great equalizer ... It insures that the people are the equal of their government whenever that government forgets that it is servant and not master of the governed." --Ronald Reagan