I have been on a range when the weather was great no breeze and while spotting for someone, have seen what I would call the swirl left by the round going down the range through binos, is there a correct name for it ?
My ex's fcuking Admin!!!!
Whatever it is, it isn't a vortex.

The projectile, being supersonic would have a bow shock that would, in certain conditions, be visible. High humidity is one such condition.
Known in the trade by those who do a lot of Long Range Target stuff as "Swirl", I believe. :wink:

Valuable for judging the wind, and stuff, at which I was always crapp :(

Bull 5, that man ...

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