With a really accurate rifle, wind is everything. The wind is frequently the single biggest factor in group size with a really accurate rifle. Even at 100 yards.
I very often see pictures of groups posted on here that should be called weather reports, not groups.
Without at least a rudimentary understanding of this, "load tuning" in variable winds is a complete waste of time and components.
+1
If you have to shoot, you are way ahead to use a wind flag. Then at least you can shoot with the wind blowing the same direction.
Shoot 50 yards if you have to shoot in a 10 mph wind...this will tell you what you need to know.
ON windy days, it is not the velocity that nails your hide to the cross, it is the changing directions by only 30* that leaves you scratching your head.
Your range will have a predominant direction. Watch the hourly weather on the internet, usually late afternoon or very early morning will be the best. Don't screw around. Carry 50/50 water/alcohol to cool your barrel, shoot 3 shot groups.
Wind flags are the best way to shrink groups with any rifle.
Below is a very, very effective wind flag:
1/4" steel rod, 42" long
14" bicycle spoke
1/2" piece of red yarn 24" long
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My first p. dog hunting partner used to tell me, "these ole 6 mils shoot right through the wind".
I went to a benchrest match, and bought a wind flag from a guy there.
When I got back home, ole Bill and I went to the rifle range, Then set the flag up at 200 yards, not knowing one thing about how to read a wind flag. I watched the wind blow to the right, then to the left. Figured a fool leans to the left and a wise man leans to the right, so I shot when the wind blew to the right. Shot a bunch of 1/2" groups at 200 that day with my Ruger 77 V in 6 Rem.
My ole hunting partner was blown away.
We stuck surveyors tape on a wood stick on our dogs hunts from then on.