When is a wind meter necessary for shooting?

[that one guy]

How far do you have to be shooting for a wind meter to be necessary?

[ar15barrels]

Depends on the wind speed, the size of your target and the distance you are shooting and your ability to read wind speed without a meter.

Having a wind meter will allow you to experience the feel of different wind speeds while seeing what the actual speed is.
Enough of this as well as shooting at various distances in those conditions will eventually make you a good enough wind reader that you don't need a wind meter anymore.
Wind meters are most useful to those least experienced with reading wind speed.
The smaller your target in MOA or Mils, the more important the wind speed is as you can not accurately correct for wind that you don't know the speed of.
You can certainly observe your bullet's drift from the aim point and then hold a correction, but without knowing the wind speed, you really don't know what you are doing.
Blindly holding a correction based on the previous miss is commonly called "walking in" your shots.

If you are missing your first shot on a target because of the wind, you probably need a wind meter and need to learn how to use it with a ballistics calculator to improve your first-shot hits.

[that one guy]

This is what I’m using

https://atlanticfirearms.com/romanian-psl-54-rifle-century-arms-ri3324n

[that one guy]

That’s what I’ve been doing is walking it in.

[IronsightsRifleman]

My M1 Garand does just fine out to 400+ yards with estimated windage. I can't see the targets that well at 500+ yards through iron sights. It all depends on what your purpose is and your intended accuracy - not to mention the kind of wind that day, not much use for a wind gage if there's no wind.

[Fjold]

Anemometers tell you the wind speed where you are taking the reading. The wind will be different 300 yards away.

You need to learn to read the grass and tree movement at distance. Use the "wind meter" and look at the grass, weeds, trees, etc., around you then compare it with the movement at your target. Then all you have to worry about is how the wind is in between.

Here are the wind flags at the Cuyama 1,000 yard range. The flag at the 800 yard line is blowing right, at the 600 yard line it was blowing away from us and you can't see it but the flag at the target was blowing hard left.

[fish45]

Anemometers tell you the wind speed where you are taking the reading. The wind will be different 300 yards away.

You need to learn to read the grass and tree movement at distance. Use the "wind meter" and look at the grass, weeds, trees, etc., around you then compare it with the movement at your target. Then all you have to worry about is how the wind is in between.

Here are the wind flags at the Cuyama 1,000 yard range. The flag at the 800 yard line is blowing right, at the 600 yard line it was blowing away from us and you can't see it but the flag at the target was blowing hard left.

But everyone says I need to know what it is where I'm standing. It doesn't stay the same all the way to the target?

Your picture almost perfectly illustrates why handheld wind meters are almost useless.

[ar15barrels]

But everyone says I need to know what it is where I'm standing. It doesn't stay the same all the way to the target?

Your picture almost perfectly illustrates why handheld wind meters are almost useless.

The value in measuring the speed of the wind around you is when you are walking around the range and learning what the grass is doing at a known wind speed that you can then observe from your firing position.

[smoothy8500]

The old NRA windchart. Found in almost every Highpower scorebook. Most have wind dope charts for the standard 2,3,600 yard distances. Still pretty rare to see anyone with a windmeter. We all get used to calling the wind. But Randall is right, you need to observe what is happening downrange and estimate it.

[M1A Rifleman]

My M1 Garand does just fine out to 400+ yards with estimated windage. I can't see the targets that well at 500+ yards through iron sights. It all depends on what your purpose is and your intended accuracy - not to mention the kind of wind that day, not much use for a wind gage if there's no wind.

The benefit of a heavy 30 caliber bullet with a notable powder charge behind it

[smoothy8500]

[hambam105]

Pair of identical range flags on the 550 yard line about 60 yards apart pointing in absolute 180 degrees apart.

One flag is pointing due North, the other flag is pointing due South.

Each flag indicates same value, same speed, but in opposite directions.

Now what?

[C.G.]

And in between those somewhere there is most likely a transition zone with zero wind surrounded by whichever direction the wind feels like before it turns into a relatively stable direction.

[jarhead714]

Probably when you’re using like a 9 iron or pitching wedge.

[ar15barrels]

Pair of identical range flags on the 550 yard line about 60 yards apart pointing in absolute 180 degrees apart.

One flag is pointing due North, the other flag is pointing due South.

Each flag indicates same value, same speed, but in opposite directions.

Now what?

Shoot through it and wait for the spotter.
Or just wait for conditions you can read better.

I shot a 1000yd match once where the wind was perfectly cyclical.
We had a single flag at about 600yds.
I could watch a flag pulse up and down 3 times and then it would lull for a second or so.
This occurred about every 10 seconds.

I fired almost all my shots in the lull.
One shot I fired late and missed the end of the lull slid into the 9 ring.
My score ended up at 199 -13x.

Lesson learned: there's almost always time to wait for better conditions.