I assume this is for a bolt action rifle in 308 cal. I would highly recommend that you buy a few 20 rd boxes of assorted ammo in different weights first - in your case with the 308 get at least 150 and 165 grain to try out.
After that a few different bullet styles such as accubond, partition or just plain jane Corlokt or Power Point are also good to try through your rifle.
The idea here is to find the sweet spot - the ammo style and weight that exhibits the finest group accuracy in your particular rifle at your zero range.
For instance you might get lucky and discover that cheap Winchester power point 165 grain shoot just fine through your rifle and Voila your search is over -
Buy a case of 500 rounds of that and you're done.
If the 150 and 165 grain ammo shoot about the same - go with the heavier load as this gives you a bit more flexibility to hunt larger animals such as elk and moose.