I just built a custom mosin nagant rebarreled at a .308 with a 7.62x54r chamber and i want to make hand loads for it I have 7.62x54r lapua brass 168 smk's cci br2 primers and I want to know what would be the best powder to use and any other useful information On the subject I also bought some 208 Hornady match if anybody has Experience with those I have a rcbs rock chucker supreme single stage press if that matters