Good evening campfire, wondering if someone might be able to explain something to me. I have been developing a load for my .260 with 140gr Berger VLDs over RE17. It is a Savage 12 action, bedded in an all aluminum chassis with a shilen barrel, and shot from sandbags dug in front and rear. My sweet spot is 41gr on the dot for the tightest group, but the best leniency is 41.41.9gr. Here is the kicker though... as I'm pushing more powder, my group are staying relatively consist vertically but pushing about a 1/2" right with less powder and 1/2" left with more powder. Then at 42.5 it centers back up, just as it did with 41. Anyone got an opinion on this phenomenon?
