I believe as JE Custom said "Using a Mill Dot reticle is marginal at best in my opinion"
I look at it this way, I spend a lot of time and money on custom rifles
and load development. All of my long range rigs shoot 1/2 MOA on a bad day and 1/3 MOA or better on a good day. All shoot sub MOA at 1K. In ideal conditions.
So why use Mills to range and as 300 rum said be off 20-30 yards at 800 yards? That is unexceptable in my book! In the non magnums I am shooting and even 300WSM that would ADD 1 MOA of error to the shot. And that IS NOT center to center that is a full 8" high or 8" low error at 800 depending if judged long or short. I just don't want to be off by that much from the start.
For sniper matches have at it. It should be great fun. Or for what they were intended a 8" or 20" low shot is still a good hit on an enemy.
I'll stick with my LRF.
Funny thing is, I've had the chance to hunt with many LR hunters. Some from this board that even say they use Mills. I have yet to see a shot taken without a LRF.
just my .02