It aligns because it is a "base 10" system. 1 mil is exactly 1"something" at a distance of 1,000"somethings.But beside that, mrad has no bearing in linear math anyways, but for some reason it seems to align in metrics.
A mil is:
1 inch @ 1K inches
1 meter @ 1K meters
1 cubit @ 1K cubits
1 mile @ 1K miles.
The OP's scope is indeed in .05mil graduations therefore all his click counts will be double. Just like using a 1/8 moa scope vs 1/4 moa.
Although, I agree that this scope wasn't meant to be dialed. The fine graduations in this instance are meant to achieve finer resolution on the initial zero. This scope (if it is the one I think) was meant to use the reticle for holdovers.