IRT Mil-Dots and scopes...
Please remember that Mil-Dots are a measurement tool. If you get a fixed power scope the dots will be set to subtend correctly at that power. Where you can run into trouble is with Mil-Dots and variables. Most variable powder scopes with Mil-Dots have the reticle on the incorrect (IMHO) focal plane. With most you have to be at a specific power setting to have the dots subtend correctly to range. If you are not at that specific power setting and you use the dots your will reach an incorrect answer.
The way to tell if the dot’s on a variable scope are on the right focal plane to range correctly at any power setting is to look through the scope at its lowest setting. While looking through the scope increase the power… the “size” of the dot’s (as viewed through the scope) should increase along with the power. If the dots do not increase in size then they are set to be used at a specific power setting. (keep in mind that if they do they are not actually “increasing” in size just that you are viewing them at a higher power in relation to your target (little target/small dots/low power…. LARGE TARGET/BIG DOTS/higher power; in relative relation to target/dots).
I believe the Springfield variable scopes have the dots on the correct focal plane (again, IMO).
I personally LOVE mil-dots and wish they were available on every scope as a factory option. They are very versital.... Ranging, Hold Over's/Unders, leads, etc. There is no better recticle IMO.