what is best? if you get 100 replies you will probably get 100 different opinions,try at least 3 different loads and see which 1 works best for your rifle,I personly load 165 grn. accubond,partition or SST(depending on my mood when I Load)(all 3 work well)in front off IMR or H 4831 and a fed.215M primer and have had nothing but 1 shot kills.