A .357 will be fine for deer hunting as long as you hunt with it properly. Some say you have to use a .44 mag, but plenty of deer were taken with a .357 in the 20 year period between the introduction of the .357 and the .44 mag. Pretend it's a bow. If you use bow hunting skills and ranges, the .357 will work just fine. If you want to hunt at longer ranges, between 50-100 yards, I'd suggest getting a .44 or better yet, a .41 mag.
Regarding another post, yes, the Rugers are stronger than a S&W, but how strong does it have to be? If S&Ws couldn't handle the load, they would not have sold a gazillion of them. I have Rugers, Colts, and S&Ws, all in .357, and they all work just fine. Colts today are pretty much out of the picture. The price of a Colt is a great deal more than they are worth. Kind of like a dead singer. Suddenly his records sell like crazy when he dies. The Rugers are tanks. They will out last several generations of children/grandchildren. You will need a trigger job however. The S&W are a lot smoother, especially the triggers, and many folks just shoot better with them because of that. The old problems they had with the K-frames has been worked out years ago. Also, most shooters will put two to three times more .38s through them than full house .357 loads. It has more to do with economics than anything else!
Bottom line, You cannot go wrong with a good .357. I would not buy anything made south of the border. I like S&W double actions the best, but that's just my opinion, not worth very much. I have one 19 and one 66. They are both fine guns and I know you will enjoy which ever one you get. You may wind up shooting it a lot more than your 1911.
By the way, DO NOT get a Ruger single action .357 (or any other caliber for that matter). I'm warning you now. If you do, the Single Action Virus will attack you, and you WILL NOT want to shoot your 1911, or any other pistol for fun anymore. You will feel obligated to practice with your carry gun, but everything esle will collect dust. Single actions are just more fun to shoot, easier to maintain, and will spoil you in a hurry. Bisleys are the worst. Be ye so warned.