Re: Size of target at 800 yards? And how close to center?
I will try to shoot at a target that provides an aiming point that is .5-1MOA in size. I agree with prior posts that a tall target test is important, not only for cant, but also for determining actual click value. I will center exactly for elevation and be sure to enter either the correction in my ballistic calculator for true velocity, or actual click value if my scope turret is not .25 click value. Either will do but if tour turret is off your velocity will not be true. This will keep my zero. For windage, I will generally rely on my tall target test, and confirm on a windless day making sure to take spin drift into account. It has almost always been on if my tall target test and scope alignment was good. I wil always try to center my groups at my maximum shooting range.
"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt