I have used IMR 4064,very similar to Varget,loading 175 smk, and 178 hornady, 7.62x51, It flies good out to 1000 yrds, 26" bartlen barrel,11.25 twist, .299 tight bore. 44.6 grains Varget on the 175 smks, and 44.1 grains IMR 4064 on the hornady 178, both bthp