Been playing around with mine some more. Tried some Sierra 123 BTHP's, along with the Alliant Varmint powder, which some of the 6.5 Grendel websites have been bragging about. My best accuracy is still with the 123 SST and 27.4 grains of H335. I'd like to experiment some more, but I can't find the bullets I'd like to try. Seems that 6.5 reloading components are still scarce. I'm set in the powder and primer department, just low on bullets and brass.