At about twenty five feet: Hold the gun as steady as you can from a rest support with the optic mounted. Use the regular sights if you can see them to establish a point of impact versus point of aim. Otherwise use the dot to establish a point of impact versus point of aim. You should be on the paper at that distance.
Measure the vertical and horizontal distances between point of impact and point of aim (decimal inches would be helpful). Adjust the dot in the direction(s) required to close the distances until you're satisfied.
One minute of angle clicks at twenty five feet will be about twelve clicks to the inch. Keep in mind you're looking to achieve reliable hits within a certain radius, say three inches, as being sufficient for paper bulls, Shoot-N-See bulls, small steel plates, or bad guys.
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