Yep, wind flags....learned about that at a 200 yd BP match in Cody about 10 years back. Full value L-R 10G20. Those puffs will get ya dang near every time.
Yep!
Which is exactly why, as Jim Carmichel pointed out years ago, the majority of half-inch rifles "if I do my part" are judged on a single 3-shot group.