Is anyone here using an anemometer to help improve their accuracy?

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Been looking into it. It looks like all of them are Bluetooth, which limits the distance to a stated 100' (ymmv). What I'd like to find is one that has Bluetooth 4.1 with the "daisy-chain" feature of the that protocol has so that you could put them on top of windflags at various distances out to say 100m. Then have a app that would display all of them, or better yet do the ballistics calculation for all of them. So far that seems like a dream... Even with that they wouldn't be able to deal with up and down drafts which IME can be more important than cross winds. "Oh great! I corrected for the cross wind, but it was a down draft too and now I'm perfect left/right for a 10 ring, but dropped into the 6 ring instead!".

I also would be concerned with the response time. If the application and devices aren't polling and displaying updates rapidly enough, they would not be a truth source.
 
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I'd be interested to hear about the process you go through to make adjustments based on the wind readings. E.g. Do you have to use another piece of software to calculate the windage adjustment based on the wind speed, pellet weight, pellet speed etc? Or is it trial and error plus a lot of range time with the device and a notebook?

Also, I'd like to know how consistent the readings are typically between you and the target. I.e. If the device tells you there is 15mph wind coming from the east and your target is 75 yards away, would you expect it to still read approx 15mph from the east at 25 and 50 yards or do you have to take multiple readings usually?

The reason why I ask is because people talk about seeing wind flags blowing in opposite directions in different lanes at BR matches. I can just about get my head around using a table of some sort to adjust my shot based on one reading but I can't imagine how it would work if the wind changes direction at multiple points over the trajectory. 

There is obviously a way to do it because of what long range precision marksman can do. I just can't figure it out in my head... I'm currently working on improving my long (re) range shot so any tips would be greatly appreciated and put to good use.
 
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"zebra"I'd be interested to hear about the process you go through to make adjustments based on the wind readings. E.g. Do you have to use another piece of software to calculate the windage adjustment based on the wind speed, pellet weight, pellet speed etc? Or is it trial and error plus a lot of range time with the device and a notebook?

Also, I'd like to know how consistent the readings are typically between you and the target. I.e. If the device tells you there is 15mph wind coming from the east and your target is 75 yards away, would you expect it to still read approx 15mph from the east at 25 and 50 yards or do you have to take multiple readings usually?

The reason why I ask is because people talk about seeing wind flags blowing in opposite directions in different lanes at BR matches. I can just about get my head around using a table of some sort to adjust my shot based on one reading but I can't imagine how it would work if the wind changes direction at multiple points over the trajectory. 

There is obviously a way to do it because of what long range precision marksman can do. I just can't figure it out in my head... I'm currently working on improving my long (re) range shot so any tips would be greatly appreciated and put to good use.
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Most of the ballistics software/sites will calculate for wind. It's fairly straight forward math, and a little memorization will go a long ways. For example the 30cal pellets I shot at 75y and 100m with a 10mph wind at 90° little over 11" of drift, at 50m its half that, if the wind is at 45° it half that. Further, if I have opposite flags, one at 90° and one at 180° they nullify each other (more or less), then evaluate the remaining... You also have to factor in, if the wind is same speed at all distances, the closer to the muzzle the more the effect, e.g. a 10mph 90° wind at 5m has more effect than a 10mph 180° wind at 65m when you target is at 75m or 100m.

The general rule of thumb is wind is additive. Rather you are adding a positive or negative number... When I shot/guided for long range hunts, we were primarily dealing with fairly consistent wind direction, the variable was really speed/gusting. 
 
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I tried one of the WeatherFlow units, but found it to slow. Or I was to slow processing. Also my unit would only Bluetooth out to about 30 yards. Got me to thinking about how long before someone designs a unit that can daisychain 3 units and paint a target on a phone or tablet with a POI dot, while incorporating one of the ballistic apps. Something for you handy engineer computer guys to think about.
 
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Here is a glimps through my scope down range out to 100y. Although is was a calm and beautiful day to shoot, I still decided to place the flags out. It was 25cal day with the Wildcat and Marauder and the purpose was just for trigger time. A strip of wedding veil tied to pieces of carbon fiber rods did the trick to show even the slightest breeze. I would say it helped, to get an idea how the 25gr JSB performed through each rifle. Of course it's not conclusive since the pellet and weather is also a factor to the target. But it was a gourgeous day!

 
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