ORIGINAL: Bird Hunt Dog
You won't noitice a difference at 20 yards..............If your a ways up in the tree you will notice it at 40+ yards...........But you would have to be way up there!!!
What do you consider ways up the tree? And actually the farther the distance out the less you'll notice it. It's the shorter the distance to the tree compared to the higher up the tree you go in thereom.
Ex: if a deer is standing next to the tree, say 6 feet, 2 yards and you were 60 feet up the tree, you'd be 20 yards from the deer...if you ranged that deer with a laser it would say your 20 yards from the deer. At farther distances out from the tree, that distance difference would close, your shooting angle decreases.