Author Topic: Wind Direction - Deflection Chart ... Neat  (Read 8121 times)

John Boy

  • Free Grazer
Wind Direction - Deflection Chart ... Neat
« on: October 14, 2008, 06:07:17 PM »


12 and 6 o'clock - No Adjustment
Example:
A wind speed of 20 mpg at the 3 or 9 position will have an effect of about 18 mph at the 2 -4 - 8 and 10 position.  These will have a crosswind component of 86%.  The same 20 mph wind at 1 - 5 - 7 and 11 o'clock positions will have a 10 mph component ... half the effect with a cross wind component of 50%

Source:  Understanding Firearm Ballistics, Robert A Rinker
(15th printing Oct 2004 - Fifth Edition)
« Last Edit: October 14, 2008, 06:11:23 PM by John Boy »
Regards
John
SASS ~ Darkside WartHog ~ SBSS (OGB, w/Star) ~ SCORRS
GAF Bvt 1st LT, Atlantic Division Scouts
Devote Convert to BPCR

Re: Wind Direction - Deflection Chart ... Neat
« Reply #1 on: October 14, 2008, 08:27:48 PM »
Howdy JB,

Interesting stuff! Of course it helps to know the wind speed and the amount of deflection you get with a straight side wind. Still it's good to know when that once in a lifetime opportunity arrives.

Reverend Chase
"A Great Outfit is Remembered
Long After the Lackluster
Shooting Performance
is Forgotten."

WartHog

Reverend P. Babcock Chase