Thanks to all for the information. I suppose it would be like when we shot competition with our NM military rifles. I guess after thinking about it! It is amazing how the eye can exactly place the front sight post on them half way up and in the middle of the round rear sight aperture!
It is definitely going to take some getting use to after all these years using a crosshair of various types when using a scope! Whether Std. Crosshair, Duplex or Long Range Mil-Dot.
Thanks again. If anyone has ever Coyote hunted with one please comment! I can see where the circle could possibly and readily acquire a target on the move. I will have to experiment!