270 on up. You'd probably be better of with a 308. A 300 Win Mag is a bit overkill for deer, but not for long range target shooting. I have 3 deer rifles in 30-06. If your going for elk...I would pick the 30-06 or the 300WM.
Look at the CZ line of rifles. A TIKKA is not so bad either --- Or you can go with a Savage. I have a SAKO Model 75 in 30-06, but the SAKO Model 85 is better.

The TIKKA has a butter smooth action, adjustable trigger and SAKO barrels; with accuracy right out of the box. Some hunters don't prefer the Accu-Trigger from Savage.