I would (Do!) use a scope with MOA adjustments and second focal plane (non-magnifying) crosshair reticle.
F-Class targets are graduated in MOA, very nearly.
For example the 600 yard target has 3" X ring, 6" ten ring, 12" nine ring, 18" eight ring, 24" seven ring, and 36" six ring comprising the black and 30" five ring in the white.
So you can adjust and/or hold off conveniently in MOA, they are right there for you.
There is no target feature in mils.
Since a half MOA will take you across a ring, the usual coarse "tactical" reticle elaborations are not a lot of help. A friend has worked with one of those Horus grids and found himself trying to split graduations to hit center.