My thoughts are, I would not want to under scope a .307 rifle.
The round is good for hits to 1000 yards. You put a 1-6x on it, and decide to do a long range course, and you are buying another scope.
And the .308 is not really the round of choice for close quarter use.
IMO, save the 1-6x for .223, and put a scope that goes to a minimum of 10x or more on a .308 for longer ranges.
1-8X on my AR10 .308. Good in close if needed and good to 300yds easy.