Some breakdown for the OP (I didn't read pages 2 or 3):
A circle is commonly known to be broken into 360 degrees. Each degree into 60 minutes and each minute into an even smaller unit (seconds). A circle is also broken into 2pi (that is two times pi) radians. Pi is the ratio of circumference to diameter from 10th grade geometry: C=pi x D or C/D = pi. And true to metric measurements, each radian can be divided by a factor of 10, 100, 1000, etc. So a half circle, as we have been taught, is 180 degrees. Same half circle is pi radians, or loosely 3.14 radians.
As soon as you can see that conversions back and forth are a difficult thing to do, the sooner you can learn the radian measurement system and your new scope. Abandon moa totally with that scope and you will have only one simple option: radians (or milliradians - mils).
If you zero at your normal distance and then shoot at a longer distance (usually common increments of 100, either yards or meters) and record your data (in clicks), you will find you have no calculations to do. And from range trip to range trip, shoot to shoot, that data will prove accurate or that it needs adjustments based on conditions, but you still won't have any conversions because your thought process will be based in the click value of your new scope. And that will be reinforced by the reticle. And you won't think of minutes of angle any more. Problem solved. Until you pick up another moa scope.