It was mentioned as a means to compensate for parallax error, and that would be stupid.
You can look through a scope at the correct amount of eye relief and move your head a little to detect parallax error.
I think you can guarantee that any parallax error will affect accuracy at some point.
I don't understand why you would want to waste ammo determining something you can pick up easily just looking through the scope. By shooting you are compounding rifle accuracy (error) with parallax error.
Last edited by mauserand9mm; 11/27/19.
