Help understanding MOA reticle

[sirgilligan]

I have a Leupold VX-R 4x12 Fire Dot scope.
This is the reticle:

(Linked Source Leupold site)

At 12x the dot is supposed to be 1 MOA and the circle is 4.4 MOA.

I am confused, the documentation says at 4x the dot is 2.5 MOA and the circle is 11.0 MOA.

I would have thought at 4x the dot would be 3 times the size, so the dot would have been 3.0 MOA and the circle would have been 13.2 MOA.

The line width at 12x is supposed to be 0.3 MOA. At 4x the line width in the manual is said to be 0.7 MOA, I would have thought it would be 0.9 MOA.

Any ideas on these values?

Also, I was trying to figure out at what power between 4x and 12x the radius of the circle would be some even factor of a MIL radian. That is 1 mil, or 2 mil, or 3 mil, it doesn't matter to me as long as it is a whole number.

 

[Haxby]

Leupold says the zoom range on that scope is 4.4-11.7x. And they round numbers on some of their specs.
The inside radius of the circle should be 1 mil at about 7.5X.

 

[sirgilligan]

Leupold says the zoom range on that scope is 4.4-11.7x. And they round numbers on some of their specs.
The inside radius of the circle should be 1 mil at about 7.5X.

Thank you. I was trying to do the math to figure it out but as at a loss because the data didn't really match.

I hope to verify in the field by setting up a target with a one mil sized dot appropriate for the distance and adjust the scope's magnification until it matches it.