This one has me wondering. Shooting my Winchester Featherweight 270 WSM, Acra glass bedded, 3x9 Leupold VX2 ER at the range. This bang stick shoots 0.8 moa regularly with H 1000 since bedding it. Started loading Magnum powder searching for higher velocity, seeking 3100 fps or better with 150 grain ABs, over CCI-200. This is something that H 1000 just won't do for me. My ladder has 5 round rungs one half grain apart from 68 to 72 grains. Results: 70.5 grains chrono's at 3130 av, 0.7 group. But what gets me is as I progressed from 68 to 72 grains, the groups walked diagonally up the target, from lower left to upper right, about 6 inches between groups. So I was constantly at my scope keeping my groups on the paper. So whats up with that, is my free floating barrel hitting the stock? Doesn't look like it but anything"s possible. Or maybe everybody has this going on ??? Didn't mean to write a novel. This is the stick that may morph into a 28" HBAR for some serious fun. Thanks in advance.