With perfect eye alignment, parallax doesn't matter. I would say good eye alignment probably gives 1/2 the error. But that is a SWAG.That got me thinking of other effects of putting an accurate shot on game in addition to shift, for a scope that is non adjustable. I would think the max error would be the output of a calculator, JAT.
Longer range shooters, would a fixed parallax scope do as well for you at 500+ yds vs an adjustable parallax scope, if eye alignment was square, or whatever the term is?
The calculator I have used. https://www.lelandwest.com/parallax...onid=58544F374FB1B0C8F2B008CACD8F617C.cfusion



