I need help! I got my rifle zeroed a few weeks ago and have been to the range about 4 times since then. Here's my problem.... When I left the range the first day the rifle was perfectly centered and zeroed for 100 yds. I left the range and came back a week later and tge first group before any adjustments were made was way to the left. I made the appropriate adjustments and got it back to center. Left the range, came back 4 days later and my first group was about 4" to the right. Made the adjustment and got it zeroed again. What keeps causing this POI shift every time I go to the range. I have a quality scope so I know it's not the scope. My only idea is that I may have zeroed the rifle with a hot barrel and when i go home my barrel cools down then I come back to the range and my cold bore zero is different that my original zero. I have a Schneider barrel so I wouldn't think this would be the issue either. Any thoughts on what I can do to keep my zero true so that I don't have to make an adjustment every time I come to the range?