... A lot of shooters assume that once the reticle's in focus, there is no parallax...
I have several high end scopes I shoot with. I start adjusting to eliminate parallax error at the yardage I am shooting. When the target is brought into sharp focus using the parallax adjustment I know two things:
1. I am close, but there is still parallax error; I can induce it by moving my eye that is peering through the ocular and watch the reticle move around on the target although the rifle and scope are not moving...only the position of my eye relative to what part of the ocular lens I am looking through. I need to continue to adjust the parallax knob.
2. The final image, as near parallax free as I can get it, is, for me, always slightly blurred. Could be my eyes...I require corrective lenses to see "20/20".
