I have a few rifles all of them are well suited for deer, I'll give you a list:
300 Savage is an excellent caliber for deer, it penetrates brush well and is a very good stopping round, the deer never go far after they have been hit. It is very comparible to a 308 as it is basically a 308 with a shorter neck
30-30 Winchesteris a very good deer round too, more deer have been killed with this round that most anything else out there, again heavy enough to penetrate brush and stop the deer in it's tracks
44 Magnum is a versatile round if you hunt with a handgun because you can carry one type of ammuntion for the rifle and the pistol both, penetrates brush well and is devastating upon impact. not very good for long range shooting in my experience, keep it at 100 yards or less
338 Winchester Magnum is a little on the heavy side in respect to bullet construction, your ammunition must be chosen carefully or you will merely pop a pencil sized hole through both sides of the deer with little to no expansion, however with a 200 grain winchester silver tip bullet there is no need to track any deer it will be laying where it was shot most 9 times out of 10.
8mm Mauser is a fine cartridge for deer, practice ammo is cheap on the surplus market (900 rnds of FMJ ammo for roughly 120 bucks shipped) and it has ballistics close to a 30-06. The Mauser K98K german military rifles are relatively inexpensive and shoot like a dream, i can group 3 rounds in the size of a dime with mine. it will adequately wade the thickest brush and stops game with the best of them.
45/70 Government, this is the big one of the group, a little overkill really, but the finest multi purpose round for bear, hog, moose, elk, deer, caribou, whatever else you can think of, the loadings for this caliber are numerous and can be tailored to what you hunt, they range from 300 grain to 500 grain bullets, a 300 grain hollow point is awesome on deer, and shot placement although important for a clean kill is not as critical as with a smaller rifle in terms of finding the deer should a less preferred area is hit, at 100 yards it will pick a deer up and throw it to the ground, however if you hit a bone don't expect much from that area of meat, as there is likely to be a substancial amount missing... .
I hope this helps you some, i didn't really go into specific rifles because more often than not no 2 people will like the same rifle, but I am very partial to Marlin lever actions in the 336, 1894 and 1895 models, savage model 99's, mauser k98's, pre 64 Winchester model 94's, and Ruger m77 mkII's. I only listed the calibers i have first hand experience with.
Kevin