OP, have you handled a 686? Just asking because it's quite a bit bigger than a model 64, even my model 66 .357. I was looking at and handled a new 6" 686 last week. You'll need big hands to handle it comfortably, especially with the nose-heavy 6" barrel. With my medium-sized hands, a GP100 fits me better. My model 66 fits like a glove, as does my Ruger Speed Six and several 6" Colt Pythons I've been looking at lately. The 686 is a great revolver, though.