Kermit,
My 617 is the 6" 10 shot model. I sent it back to the S&W Custom Shop for an action/trigger tuneup, target trigger, and target hammer. This is one sweet revolver now. Very accurate, too. I carry it around the farm here in a Bianchi #111 Cyclone cross-draw holster and it is not a problem as far as barrel length is concerned.
Regards,
Rich