wind doping

[jbarlow22-250]

If I know my load information and wind value, how do I accurately calculate my hold off? I read once about standard deviations for specific calibers.....

 

[8up]

Re: wind doping

there are a lot of answers you may get to do this. Are you wanting to use a ballistics program or do the math?

 

[kraigWY]

Re: wind doping

R X V / Constant = Correction

That's assuming full value wind.

Range is in 100 yards, 6=600, 7=700 etc.
V is wind velocity

The constant is for your load.

Example I shoot 168s at 2550 fps my constant would be 10

Lets say a 20 MPH wind at 6oo yards with my M1A and 168s

6 X 20 = 120

120 / 10 = 12 so I would correct for 12 MOA

You have to find the constant for your ammo specs.

 

[JSTARSZ]

Re: wind doping

Kraig, can you explain the constant? I have been using:
Inches at 1mph x wind speed/distance

I.e 168 AMAX at 2650 is 3" 1mph
at 600 yards so
3x10mph/6= 5 MOA Is this correct too

 

[kraigWY]

Re: wind doping

Lowlight just covered this in another post, in his (I beleive it's post #5) he tells you how to find the constant for your round.

http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=3037207#Post3037207

 

[redirt78]

Re: wind doping

Kraig, both of these threads, this one and the one you linked were started by the same OP

 

[kraigWY]

Re: wind doping

lol teaches me to pay attention.

Just think I use to be a trained observer.

 

[redirt78]

Re: wind doping

Its not your fault buddy, you were just trying to help.

 

[jbarlow22-250]

Re: wind doping

I'd like to know how to do it long hand.