Hey Progun. No, the ranging change was just circumstantial. Just one of those "It grouped well, and then it didn't" deals.
I read someone's suggestion on a similar thread yesterday afternoon, and tried flipping the Accushot mount bracket over. Y'know, a shot in the dark done without reason, since it had been fine previously. Mostly just done as a way to give myself time to think about the problem.
But, while trying to zero the scope it displayed this behavior: It would group for two or three shots pretty well, then go back to shooting all over the place. I'd try zeroing again, get another couple of hits right next to each other, then again shotgunning all over.
Something's shifting in the scope, wouldn't you think?
Anyway, good morning to ya... or evening... or whatever's appropriate. Good day?
Seeya,
Parks