Two of the most accurate powders I used to use in my regular 6BR was VV N150 and N540.. I was shooting 108Bergers at the time with it. So since the parent case of the 6mm Dasher is the 6mmBR, would not those same powders also work very well in the 6 Dasher? I never see them listed as regular powders being used.. Does anyone have any experience with either of these powders in the 6Dasher with 105-108gr. bullets?.. If so, good or not so good, could you tell of your experience.. Thanks..