Brian41,
I own the very Taurus you were looking at - the M607 seven-shot .357 with the four inch tube. It would be good for the back country duty, but you can find lighter - it's built on the .44 Mag frame after all. For that same reason it is a bit bulky for concealed carry. It's best used as a car or nightstand gun, or riding in the duty holster of someone insensitive to it's weight. As for deer, it's good to remember with that gun and some others like it, that only about three of those inches are rifled barrel; the remaining inch is dedicated to what is essentially a built in compensator. If you want something smaller than a six inch for deer, I'd at least make it an unported barrel to get as much zip as you can out of it. You might try to find a five inch Smith & Wesson. They've never made as many of them, and I don't know off the top of my head if they currently catalog it, but they can be had used if you can find somebody willing to give it up.