A mil is 3.6" at 100 yards. Try this with mil's. A 10" disk measures 2 mils. Now what?
No, the question wasn't in yards. The question was, "now what?" after citing a 10" disk and a 2 mil measurement.
I guess to be fair, "easy peasy" depends on your mental prowess
But, to play your game and use yards is still easy. And it does not require memorizing any constants. It's as simple as this:
Size of the target in yards (or meters or inches or millimeters, or anything else) / size of the target in mils x 1000 = range in yards (or meters or inches or millimeters, or anything else)
A 16" target is a little less than half the 36" in 1 yard, or if using a calculator, 0.44 yards. So you take 0.44 yards / 0.7 mils, which is a little over 0.6 if doing the division in your head, or 0.6349 if using a calculator. Multiply by 1000 and get 634.9 yards.
Using a reticle that has 0.5 Mil increments, and further visualizing 0.1 increments from there, is plenty easy and precise.
