Uhh, I don't claim to be an expert on revolvers. As a matter of fact, I know very little about them when compared to my knowledge of pistols but I've been doing some research into both the S&W line as well as the Taurus line since my next .357magnuum will either be a Tracker or a 686+.
And I could very well be wrong about this (and if I am, I apologize ahead of time), but I don't think that there is a "Taurus 686". There's a S&W 686 and a Taurus 605 and a Taurus 608 but I don't think that there is a Taurus 686.
FUD.