Thank you. I was wondering if they make a "MOA dot Master" but I found your video that allows me to use my Mildot Master without having to buy another one. Thank you. This information should be in the Mildot Master Manual.
Measuring range doesn't have anything to do with zeroing. You are just measuring distance by comparing the anglular measurement displayed by the reticle compared to the known dimension of the target. It is like a golf rangefinder.