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Question for S1

 
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Old 12-21-2002, 09:28 PM
 
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Re: Question for S1



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Old 12-22-2002, 12:43 AM
 
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Re: Question for S1



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Old 12-22-2002, 08:02 AM
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Re: Question for S1

S1
The 17.4 is MOA I got this off of one of my drop charts that I use for my 338 Yogi sorry for the confusion.
Crow Mag
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Old 12-22-2002, 09:40 AM
 
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Re: Question for S1



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Old 12-22-2002, 10:32 AM
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Re: Question for S1

S1
I am using a 100 yard 0 and the elevation is 900' above sea level 50F degrees the bullet is traveling at 3150 FPS with a BC of .796 target is at 1000 yards wind is 10:30 and steady 10 MPH.

Crow Mag
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Old 12-22-2002, 11:55 AM
 
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Re: Question for S1



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Old 12-22-2002, 03:43 PM
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Re: Question for S1

Have you guys read the "Wind Probe" article in Dec. Precision Shooting on crosswind components and using a wind component chart?

In this chart the 10 mph at 10:30 wind component is 7.5 mph not 5 mph as most believe. Gene Beggs contention is the crosswind component has a quicker change in the 10:30 to 12:00 o'clock range than the same range at 9:00 to 10:30 does.

The CWC at 10 o'clock is 8.6 mph vs an 11 o'clocks 5 mph value.

In other words a +- 30 degree angle wind change that is comming from 9 or 3 o'clock than 12 or 6 o'clock has little effect but a +- 30 degree angle change at 6 or 12 o'clock is huge and also is switching to top that off.

A 1.3 mph vs. a 10 mph change! [img]images/icons/shocked.gif[/img] Much easier to group well in direction changes that are happening closer to 3 or 9 than 6 or 12 for sure.

I'll post a pic of the chart after I scan it in. One could convert the angle into a multiple to get the true full value wind one should correct for in the field for quick use too.
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