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 MiL Dot / wind drift / data?
gunshinestate  [Member]
2/21/2010 2:15:25 PM EDT
Im looking into buying a scope with a mil reticle.
I have a couple questions regarding mils and wind drift.
I have done the shooteready thing and score between 96 and 100 using the mil/mil. Im saying this because I understand how to use the data.. my question is how to come up with the wind data in the first place?

What is the best way to determine wind drift using MILS?
I notice on all the ballistic calculators..etc, they give wind drift in inches.
Do you then convert all those numbers to mils?

Is there a better way?

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fargo007  [Member]
2/24/2010 11:41:46 AM EDT
Most contemporary ballistic computation programs will produce output data in any unit of measure you want. MILS, MOA, inches, cm, etc.

And they are able to do so with surprising accuracy if the conditions encountered are accurately entered into the program.

The programs arrive at their estimates by considering a variety of technical factors including the projectile velocity, the wind velocity, the BC of the bullet, the sectional density of the projectile, the distance from the muzzle (and the concomitant velocity drop), and the drag model. Many other factors are used as well, but that's enough to get ya started I think.

That said, most shooters realize they do not need to dig into this any further than what is required to get good input information into the computer.

There are old school wind estimation formulas out there, but I haven't ever seen anyone using them in real life.


ziebart  [Member]
2/24/2010 1:55:19 PM EDT
JBM calc will output in mils, moa, inches or whatever. its default is inches so you will need to change it though.


wind reading


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gunshinestate  [Member]
2/26/2010 9:42:07 AM EDT
Thank you both for your reply.
I have started using JBM and it gives the results I was looking for.

I guess I was wondering how people did it without using ballistic programs..etc.

If there was an equation to plug in distance, wind, .etc and result in mils.

It seems like it will go to inches of drift then convert that to mils depending on distance.

JBM seems a bit easier!

Thanks again

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NOMADSS  [Member]
3/28/2010 10:59:49 AM EDT
Most data books on the market offer plenty of refernce info that can help you get the information you request.

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