Mils work just like MOA, basicly there is 3.6 inches to a mil.
Mils are easier to use for range finding. Simple really. Target Size in yards times 1000 divided by mils.
Lets say you are deer hunting. You know that the average deer is 18 inches from top of his back to the bottom of his stomach.
18 inches is .5 yards. Now lets say you look through your mil dot scope and see that the Mil dot scope and see its 1 and 1/2 mils from the top of the back to the bottom.
So .5 X 1000 = 500 / 1.5 = 333.33 yards.
Same thing, lets say its 1 mil, Then .5 X 1000 / 1 = 500
Now lets go PD hunting. You assume the PD is 6 inches tall setting by his hole.
6 inches is 1/6 of a yard or .1667. .1667 X 1000 = 166.67
You look through your scope and see the PD is 2 Mil dots high.
166.67 / 2 = 83 1/3 yards.
You can do the same thing using metrics but instead of yards use meters
Target size in meters times 1000 divided by mils = distance in meters.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071