Really focus and parallax are different things. Focus gets things sharp and the parallax corrects for POI shift with eye position looking through the scope. Parallax is more evident at closer ranges, beyond about 150 yards or so there isn't much to adjust, probably why most AO scopes go from 200 yards to infinity in about 1/16 inch of travel on the AO dial. Larry
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A gun is just like a parachute, if you really need one, nothing else will do.
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