Rifle Scopes Converting MOA turrets to MIL turrets

[tucansam]

Longrange blog 6, MOA scopes with MIL reticles - YouTube

Very, very interesting. I have a few MOA scopes that I love, but was going to sell and replace with MIL. I'd love to simply convert the turrets, but I'm not exactly clear on how to do it. If I have 1/8th MOA clicks, do I simply run the math to convert them to MIL and mark the blank tape accordingly?

 

[Ledzep]

I would lock the rifle down some how and put a reference sheet out. Center the reticle on a dot, then move the turrets until you've moved it .5 mils, then mark (or 1 mil if you have a plain mil-dot, then fill in the .5 mil spots afterwards), rinse/repeat until your turret is filled up.

I have thought about doing something similar, just putting ranges on my turret, then making dope cards for varying temp/pressure that simply say how far +/- from my "standard" setting.

 

[tucansam]

where can I get a reference sheet that I can print out and that will be accurate (ie sized correctly, designed to be printed in word or whatever, etc)? this is a great idea.

 

[roggom]

Here is a good reference http://www.mil-dot.com/media/1027/the_derivation_of_the_range_estimation_equations.pdf

Now remember the 1/8 moa is a much more precise increment than .5 mil, so you may have to do some cranking to move up and down in mils.

Not sure which scope you have, but some of the Nikons are cut in 1/8 moa (Buckmaster and Monarch), hopefully you have one with 12 moa per turn, so that will equate to 3.4896 Mil per turn.


1 mil = 3.438 moa, so 1 moa = .2908 mil, furthermore 1/8 moa then = .03635 mil

OK now we know that every click is .03635 mil so .5 mil will = (.5/.03635) = 13.75 or 14 clicks

The next is the 1 mil mark 1/.03635 = 27.39 clicks and so on.


If you want to save the confusion of counting clicks then you can just chart out .5 mil increments.

.5 mil = 1.719 moa, so 1.719, 3.438, 5.157, 6.876 etc you use the closest moa increment to mark off on your turret.



Now one issue is that the moa turret is not a whole number of mils per revolution, so when marking your turret you will have to increment it out to about 10 or 12 mil (which is enough dope for a 308 to get to 1000Y) you cant simply stop at 3.489 as the next revolution will be wrong.



Sounds very confusing, but it is possible to do, get some white electrical tape and mark off your turret, so .5mil will be approx at the 1.75 moa mark. This will also end up being the same spot for the 4 mils (at one revolution)

A turret tape might end up looking like this ( not exact but just as an example)

moa 1.75 3.5 5 6.75 8.5 10.25 12 13.75
mil: 0.5 1 1.5 2 2.5 3 3.5 4
: : 4.5 5



** crap the html editor keeps truncating my example, but you should get the idea.


or, you can buy a mil/mil scope

 

[Hellbender]

You're making it way too hard, here's a place that will make exactly what you need....

MIL CONVERSION - TASKFORCE4 LLC

Email him, he will custom make a S&B and it will be done right.

 

[waste_knot]

Here's a sheet with Mil grids. It's only good at exactly 100yrds

 

[craigp40]

Anyone ever use the Taskforce labels? Seems interesting, but would like to hear about practicality and quality. I have a couple Leupold TMR scopes that could benefit from this.