I haven't shot 6.8 in several years, but when I did I used barnes 85gr TSX & 95gr TTSX over Reloader 7 & Reloader 10x. Great velocities, all deer DRT. H335 & H322 were also good powders. Settled on RL10x as it was the quickest, 95gr right at 3k in an 18" & a little over 2900fps from a 12.5"...