Vic, Steve,
If you make an adjustment and the bullet impacts opposite the adjustment-suspect that the bullet may have hit the side of the barrel and ricochets to the other side( don't ask how I know this can happen).The The point of impact adjustment pads usually are secured with 2 screws. If you have to, you can take one out to get a little more adjustment.
Vic, see if you can adjust it to 50 yds. My 22MRF is sighted at 100 meters,you may be trying too close.
BTW, you did boresight first didn't you?
Mike