The .308 pushes heavier bullets faster than the 7-08 and gives a wider wound channel. If you reload, why use factory ammunition? The .308 or 7-08 brass is still used if you slightly improve the case. And if you don't want to modify the case, then you don't do it. Bye the way, you're looking at about 51 grains of powder to the base of the neck.
Dang, we're approaching mid-winter levels of pedantry.
