i agree with se7enremmag on this. nephew has one in 223 that would do this with a bipod attached or resting the very end of the stock on the rest. barrels are free floated and i think that it puts a different pressure point on the barrel causing the point of impact movement. when we sight it in off bags i have him keep the rest back by the magazine. seems to help. just my opinion. good luck and be safe to all going out.He's gripping or resting the stock in a different manner each time he shoots a new group. Or lying it in the sandbags or lead sled a little different each time. I'd be willing to bet on it. Those axis stocks are pretty light and flimsy. As someone else already stated if the rifle shoots groups like that it's not the rifle. If he were flinching, it's unlikely he'd flinch to the same place each time. The Axis 1 has a stiff trigger, but like flinching, I find it unlikely that he'd shoot good groups if that were the issue. Take close note of how he's griping and handling the stock when firing.