My opinion only....I always have the black of the 10 rings set right on top of the blade front sight which has the correct width to match the perceived width of the 10 ring at distance. You can do the same with a pinhead to form a perfect figure 8. For "target" scope I zero so the 10 ring sets right into the upper right quadrant formed by the crosshairs. Never want the sighting device to hide the target.
However, hunting scopes are zeroed onto the center of the intended target.