MOUNTIN DU wrote::shock: ...not to mention that canting in either direction amplifies your windage error as well ...snip...
+1 to that factor. Due to having to mount the scope so high on AR's I use a level to prevent canting when shooting for load assessment, off of a bench rest, which is most of my time at the range. If you doubt the effect, zoom up to maximum magnification on your scope and rock it left and right a tenth of an inch. That's 0.1 inch and look where your cross hairs fall on a target at 100 yards. In my 6-24x50 Nikon Monarch, it's off paper on an 8 1/2x11 target. If you doubt you are really that far off paper, squeeze the trigger and see where it goes.
Hoot