I have 2 Nikon Monarch UCC 6.5x20x44 AO scopes on 2 of my rifles. I having issues with POI moving to the right past 100 yards. Mainly I've been shooting at 200 and 300 yards. I started another thread about hold and trigger control that seems to help the groups move closer to the center when I do it correctly. In the meantime I just finished reading a good article on parallax and it got me thinking could this be part of my problem. I do my best to try to adjust for parallax but I can't seem to get perfect. I can get it adjusted to where the reticle does not move on the target when moving my head up and down, but I can't seem to adjust it to remove the side to side movement. Is there something I'm doing wrong?? And could this be the reason for the groups moving to the right??