For a weapon that's only for killing game, the Ruger SR762 is probably the "Ideal" rifle.
Military grade for ruggedness and reliability. Accurate and powerful enough for use in 98%of the hunts anyone would ever use it for.
For a weapon that is used for enjoyment of the hunt more than about any other it's probably this one for me.
My Rifle 3 by
Steve Zihn, on Flickr
You see, "best rifle" is a matter of opinion. The word Best" is also.
If the mission is
killing only, I have to argue that a rifle made as something good enough to go to war with is "best".
If the mission is to enjoy the hunt the most, a classic rifle or even a handgun is "Best"