Two different rifles displaying the same pattern of behavior. 1) 300 Win Mag, 210 Berger VLDs @ MV 2910 fps. Lilja 25.5" barrel. The rifle shoots less than 0.5 moa - no problems - both with this load and 200 gr Nosler ABs. In order to obtain a left-right zero at 1000 yds, I have to adjust the scope such that the bullets strike 4 3/4" left at 300 yds. 2) 7mm Rem Mag Tikka T3, 168 Berger VLDs @ MV 3050 fps. Tikka factory barrel. This rifle also shoots less than 0.5 moa. In order to obtain a left-right zero at 1000 yds, I have to adjust the scope such that the point of impact at 300 yds is 7.5" left. _______________________________ Anyone have an explanation for this? My bullets are drifting left to right. Spin drift? Voodoo? I don't turn target turrets for vertical or horizontal corrections. I use mil-dot reticles for holdover. So it doesn't have anything to do with turret twisting. I've read a little about spin drift and the Correalis? effect but didn't expect either of those, even combined, to account for this. Anyone have any ideas that might explain this? I shot both rifles yesterday in cold, dead still, conditions in order to verify what I've been observing the last three times out, and there are now no doubts about it. My bullets walk from left to right.