Here’s what you really need to know about wind at a match

[Lastsaint21]

It depends on the terrain. If it's flat open terrain, then yes the same basic idea holds true.

In 22PRS you can easily have 3 targets in one stage (say 40m, 120m and 180m) and they all have completely different wind holds.
Where as centrefire I've always found the wind to be more or less the same as your typical stage (targets at 400m, 550m, 700m) have far less localized variation in terrain, unless you have targets spanning a very wide area.

22lr is extremely susceptible to wind funneling and terrain effects, whether you are shooting on a square range with buildings nearby or in/around hills and valleys, I find you need to be looking for the local winds and how they'll effect a bullet.
Close range targets in valleys are especially susceptible to swirling wind that is often impossible to predict ahead of time.

Shot a match just the other day and the .5mil just wouldn't have worked, ignoring gusts and changing direction the terrain meant each target was very different in terms of shelter and the contours around the targets.

I shot a match over the weekend. Started off like a ball of fire, then had some trouble. I wasn't adjusting enough. I remembered the .5 and got back on track for a few..We took a brake for lunch and when we got back to it, I was laying 6's again..Now my .5 was to much..The winds were switchy and not much 4-5 but the directional swings (even though it didn't change from the prop) was hard for me tro realize.
I still think the .5 is a good general rule, even for 22. I couldnt help but wonder on the way home had I been better off to just throw a shot to the bottom of the T Post where I could see it had I been better off..

I was able to hang on to 3rd because I started off so good but I thought I had fell out for sure.

 

[beetroot]

I shot a match over the weekend. Started off like a ball of fire, then had some trouble. I wasn't adjusting enough. I remembered the .5 and got back on track for a few..We took a brake for lunch and when we got back to it, I was laying 6's again..Now my .5 was to much..The winds were switchy and not much 4-5 but the directional swings (even though it didn't change from the prop) was hard for me tro realize.
I still think the .5 is a good general rule, even for 22. I couldnt help but wonder on the way home had I been better off to just throw a shot to the bottom of the T Post where I could see it had I been better off..

I was able to hang on to 3rd because I started off so good but I thought I had fell out for sure.

The trouble is in swirling winds you often have no idea which direction it's coming from, so your .5mil could be in the wrong direction and be a guaranteed miss.

It depends on target size too.
If shooting further away targets that are say 1-2mils wide, then holding .5 mil isn't going to hurt as you are still well within the target, and chances are there is going to be some wind.
However if there is a decent breeze blowing then .5mil isn't really enough.

Closer range targets are often the harder ones in my experience, they are often smaller (.5-1mil) and more likely to be in locations where there is swirling winds.
In this case you are better off just going dead centre.

I guess the moral of the story is .5mil is better than nothing for 22lr but the short distances, poor ballistics, and small (if not tiny) targets mean you really need to be looking at the terrain.
You can just look at your kestrel and say it's 6mph average wind, and just hold left edge (or .5mil left) for the whole day.