Crosswind vertical deflection

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Slayerious

Slayerious

Member
Oct 11, 2016
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Hi,

I think many shooters here have Strelok and have ran into the Vertical deflection of crosswind settings.

And I assume most have swayed away from it.

The idea behind it stands that no matter where the wind is blowing from, it always deflects the bullet up or down because the rifling works with or against the wind.

Please tell me which percentage ratio you are using. Default is 10% but I calculated it could be much bigger. 10% is sound for CF rifles probably.
 
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Has anybody gathered data on this?

Or have any feelings based data to provide?

Guesses?

Since the spinning does not stop easily and the bullet loses velocity quickly, does not the deflection grow with the distance and thus a stationary ratio is not maybe the best way?

Are there people here that counter wind in both horizontal and vertical changes?
 
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Shooting field target is the best way to learn about how wind effects your pellet. I've watched pellets flying straight to the the target with it being dead calm at the the gun, only to see it slapped to one side or the other, even up or down by wind unseen.

Of course you can't rely on those situations to help predict drift. At 50yds using AA10.3 in .177 moving at 880fps will move up, or down from a horizontal wind of 5mph about a half inch. More wind, more movement.

Vertical movement is very hard to predict because it happens mostly when the wind is coming down off tall grass or a terrace, or back stop. Also when shooting near tall wide canopied trees you will see a rolling wind around it's perimeter. The only way I know of to find out where your round will go in these situations is to shoot and takes notes.
 
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