Completely useless 645 histiry. A S&W 645 was carried by Sonny Crocket in the 3rd and 4th seasons of Miami Vice.
I got mine in 1985 in a trade for an excellent Colt 1911 US Property marked built in 1918. Good trade for the $500 S&W then, but not so much in retrospective. Leading to my signature line. Still, liked the 645 then, and continue to today. I wanted something to shoot, and thought the Colt belonged in someone's display case.
It has shot well, and been reliable from the start with all sorts of ammo. From factory ball to cast handloads, and todays modern defense loads.
Cheapshooter's rules of gun ownership #1: NEVER SELL OR TRADE ANYTHING!