Refining the mil-dot reticle
There's been some questions recently concerning adapting the mil-dot as a ballistic reticle (holdover system), as well as a ranging tool. Now i haven't tried this sytem yet but it should work well (in theory, at least). Part of the problem that shooter's have in using the mil-dots for downrange reference is that the mil-dots don't correspond to even ranges, making it difficult to remember odd range zeros, and interpolating between those zeros. But there is an option to consider. If the 2nd focal plane mil-dot reticle is supposed to be used at a certain magnification, it can also just as well be used at a different magnification as well, BUT then the mil spacing changes, and the formula also changes. Ex.: suppose your mil-dot is calibrated @ 10X, but u've got a 6-24X scope and want to use the upper end of the magnification for shooting/ranging coyotes. Now an important thing to remember is as u change magnification, so does the reticle measurement (subtension), but it should change in a linear manner, such that @ 20X instead of the 3.6" rule, it then becomes 1.8", since the magnification has doubled so reticle subtension should be reduced linearly to 1/2 3.6". Similarly, @ 24X the subtension now becomes 1.5", by applying an inversely proportional equation 1.8"/X = 24/20 == 1.5" (ideally). Now, this would change mil spacing to 15" @ 1000 yds. so for the 27.77 factor equation for the mil-dot ranging formula, u can now substitute 66.66 to range a 12" coyote (back-brisket) thusly-- 12 X 66.66=800/x mils= range in yds. This could allow the user to:
1) range at a much more precise high magnification.
2) allow for more flexibility in establishing downrange zeros by matching up different inch of angle measurements to a trajectory chart which would allow the option of developing a "custom fit" to a mil-dot ballistic reticle system.
Any ideas on this??
[ 10-10-2004: Message edited by: sscoyote ]