weather center for long range

[jaymark6655]

You're looking at more like 2 to 3" of "coriolis effect at 1K... the (horizontal factor other than wind itself) factor that you do have to compensate for is spin drift which is something entirely different....
Here's an informative link http://www.appliedballisticsllc.com/index_files/SpinandCoriolisDrift.htm

Always thought that 1moa sounded like it was over compensating.  What I hate is that my calculator doesn't consider spin drift, so I kind of have to shoot a lot and try to figure out what it is for each type of round I want to shoot.

[BULLBLASTER]

The Brunton works perfectly fine... I've had both, but I'd go for the Kestrel 4000 as it's supposed to give you Density Altitude (not the same as "station pressure" or "pressure altitude". I can send you a PM on how to use Density Altitude if you like. You can get density altitude from the Brunton and lower Kestrel models but you have to use a chart that converts your pressure altitude and temperature to density altitude...

please do send a PM as I'm not understanding. I can't read the temp and pressure and altitude from the kestrel and enter that into my calculator? Thanks

[landcbeitner]

PM sent.

Yes you can use the weather station to plug all the variables into your ballistic calculator and get your drops. Another way is to use Density Altitude and have drop charts already printed for different density altitudes. There are numerous variations of conditions that could give the same "density altitude"... you could check your DA throughout the day and simply refer to the correct drop chart. That way you are only relying on the batteries in your rangefinder and weather station.... You're only eliminating one item (the ballistic calculator) but the less electronics the better IMO... Some guys print a drop chart that includes several DA's on a single chart.