This XBR powder is awesome in my 6mmbr(1 in 8 twist) 31.1 gr behind 108 Bergers shoots dots from 100-600, but I cant make it agg. in my 6ppc. I know there are people who can make it agg. in a 6ppc, and maybe I just havent learned how to tune it properly......but for now I have switched back to...