There's a reason that the 30-06 has been so popular for over 100 years. It is tremendously accurate at long ranges. The modified rounds 300 Win Mags, WSM, etc don't shoot that much different. All these guns are capable of taking deer at 1000 yards. That is a substantial difference from the current legal guns that people can get out to a couple hundred yards with.
I do like the smaller rifle cartridges for deer. Many have similar ballistics to modern shotguns and muzzleloaders with much less recoil. These are great for kids, women, and anyone else that doesn't enjoy the beating a 12 gauge slug gun can put on you.