I've owned a couple dozen 760/7600 rifles and, for me, the middle to late 1960s vintage 760 with the basket-weave "checkering" has the stock design that is the most comfortable to shoot. Since the pump stroke is the same for all cartridges, I would respectfully suggest that the common as dirt 30-06 would be easier to find and less expensive that the same rifle in 308.

Lots of guys shot Remington pump guns in the upper Connecticut River valley when I was growing up and by a wide margin they were chambered in 30-06.