Thread: wind meter....whats good value for money?

Originally Posted by ebf

They are good for confirming your wind estimation skills...

That's why I ordered one last week, from dx.com

I would have no idea how to estimate wind speed so I figured this would help me learn.

They're very cheap, around 10 bucks from memory

Originally Posted by ebf

Well, I'm off to go and battle with the wind at Seddon range, shooting 900 yds today, it's pretty gusty, so should be an interesting afternoon...

Hmmm, think we'll write today off as a learning experience

Ran out of elevation, and had to start using mildot holdover, and during the second string I somehow managed to get confused between wind direction and correction, and kept dialling more and more off the target

When I have a spare $18.70USD I will get one of these. Doesn't give you Baro pressure but will be a good indication of wind speed. The way I see it is you can see what the speed is where you are and what the effect is on the grass, tussock, trees and compare that to what is down range for a best guess. Can't hurt??

GM816 1.5" LCD Portable Digital Wind Speed Meter Anemometer - Black + Yellow (1 x CR2032)

Originally Posted by ebf

Interesting physics debate that one.

2 schools of thought

A) wind at start is more important, coz it kicks the projectile off its course, and sideways momentum does the rest

B) wind is like gravity, it has more of an effect during the later stages of projectile flight, when the projectile is traveling slower and takes more time to cover distance, giving the wind more time to have an effect.

I would thank that's A and has been pretty much confirmed at least for me. Hence a wind meter local to you is of some value, not sure if $100+ is worth it but I know wind is the hardest thing to me allow for....proved that again today at 900m....Got it right, 3 x 5s and vs in a row wind moved and then 3 x 2s....bugger....made 2 x 1moa corrections in those as well ...so the wind must have shifted 3 moa on me.

Originally Posted by Normie

When I have a spare $18.70USD I will get one of these. Doesn't give you Baro pressure but will be a good indication of wind speed. The way I see it is you can see what the speed is where you are and what the effect is on the grass, tussock, trees and compare that to what is down range for a best guess. Can't hurt??

GM816 1.5" LCD Portable Digital Wind Speed Meter Anemometer - Black + Yellow (1 x CR2032)

Free shipping to NZ so for $18US Im ordering one to play with.....EBF you want me to get you one?

naa tx, will have a play with yours

Bought ammo for next weeks compo, so I am officially broke

The way I see it is you can see what the speed is where you are and what the effect is on the grass, tussock, trees and compare that to what is down range for a best guess. Can't hurt??

No, great idea for $25 ish NZ IMHO, Im going to order one, thanks for the site....they have digital calipers as well...might take a punt on one of those as well.

Originally Posted by ebf

naa tx, will have a play with yours

Bought ammo for next weeks compo, so I am officially broke

LOL, fair enough and no probs....btw how many rounds did / do you need?

dunno if im shooting or not yet, after today, probably not LOL, damn wind.



Im doing the admin'ing / registration, 730am....have to get my teenager out of bed at 630am that will be fun.



btw today was the first pain free shoot in 6 weeks



these pills are great

5 strings - 60 rounds, doesn't look like we will do teams event on sun, at this stage only 2 shooting

300/500/600 on sat
800/900 on sun

Wind estimation techniques (mph)

1-3

Flag angle:
Vegetation: tall dry grass
Mirage: boiling
Sensation: barely felt

3-5

Flag angle: 15
Vegetation: large leaves
Mirage: 30 degrees
Sensation: felt on face

5-7

Flag angle: 30
Vegetation: small leaves
Mirage: 45 degrees
Sensation:

7-9

Flag angle:
Vegetation: short needle trees
Mirage: horizontal, wavy
Sensation:

9-12

Flag angle: 45
Vegetation: brush & trees
Mirage:
Sensation:

15

Flag angle: 60
Vegetation:
Mirage:
Sensation:

20

Flag angle: 90
Vegetation:
Mirage:
Sensation:

Winds value based on direction

90 / 9 o'clock, 3 o'clock - 1.00
60 / 8 o'clock, 2 o'clock - 0.85
45 -0.70
30 / 7 o'clock, 1 o'clock - 0.50
15 - 0.25
00 / 6 o'clock, 12 o'clock - 0.00

Correction formula:

(Distance [1/100 yds] x Wind [mph]) / Constant = MOA

There are different theories about the constant, to keep it simple, just use 12
So 10 mph wind from 3 (full value) @ 500 yds

5 x 10 / 12 = 4.16 MOA correction

308 Palma target loads only, is there anything else to shoot ?

Well, most 308 should be close, formula was USMC for 168 bt, I think

Originally Posted by Tussock

Hang on, back the truck up here. Seems to be a little something missing.

Will this work for my 6.5x47 Lapua, and my .22LR?

No specific to 308...

So in other words Tim, there is no correction required for your 6.5