NRA Patron Life Member
For all practical purposes, the mdl 19 is a .38 Special gun (I forget the mdl number. . . maybe mdl 15) and the cylinder/chambers have been bored out an additional 1/10", and heat treated to a 'higher level'.Somebody said it is a beefed up 38 Spcl. I don't know where any beefing up was done. The real beefing up was done when S&W started using the L frame for 357.
I wouldn't trade because I have already owned a S&W19. I traded it off when the cylinder started dragging against the rear of the barrel. If you don't plan on shooting it a lot with 357 Mag rounds, it should be OK. That is assuming it's still good now.