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READING THE WIND or Shooting In The Breeze

Discussion in 'Hunter (HFT) & Field Target (FT)' started by PeteM, Oct 12, 2010.

  1. PeteM

    PeteM New Member

    Joined:
    Nov 8, 2008
    Messages:
    441
    Location:
    Chagford, Dartmoor, Devon

    Q. So many methods to read the wind, which does one use?
    A. All of them! Or whatever works for you.


    Here are some useful & possibly not so useful ones.
    Please add yours or your thoughts.
    :)

    HTML:
    Wind Angle to	      Required
    Pellet Path	              Multiplier
    
      0 Degrees		0.000
      5 Degrees		0.087
    10 Degrees		0.174
    15 Degrees		0.259 * 1/4 value
    20 Degrees		0.324
    25 Degrees		0.423
    30 Degrees		0.500 * 1/2 value
    35 Degrees		0.574
    40 Degrees		0.643
    45 Degrees		0.707 * 3/4 value
    50 Degrees		0.766		
    55 Degrees		0.819
    60 Degrees		0.866
    65 Degrees		0.906
    70 Degrees		0.940
    75 Degrees		0.966
    80 Degrees		0.985
    85 Degrees		0.996
    90 Degrees		1.000 * Full Value
    
    HTML:
    WIND SPEED APPROXIMATION
    MPH	      WIND EFFECT
    0-1	      Smoke rises vertically.
    2-3	      Direction of wind shown by smoke drift, but not by wind vanes.
    4-7	      Wind felt on face; leaves rustle; ordinary wind vane moved by wind.
    8-12	      Leaves and twigs in constant motion; wind extends a light flag.
    13-18     Raises dust, loose paper; small branches are moved.
    19-24     Small trees in leaf begin to sway; crested wavelets form on inland waters.
    25-31     Large branches in motion; whistling heard in power lines; umbrella use is difficult
    
    NEAR vs FAR WIND
    When faced with multiple crosswinds, you should time your shot so one wind is calm
    and the pellet passes through the other, which is the only one you should compensate for.

    Does it make any difference which of these winds is the one you shoot through?
    Yes it does! Assuming that both winds are of equal velocity, the near wind has more time
    to push the pellet sideways & will cause it to be much further off target than the far wind.
    therefore you should shoot when the near wind is calm and compensate for the far wind, if that is possible.
     

    Attached Files:

  2. Conscript

    Conscript New Member

    Joined:
    Jul 27, 2010
    Messages:
    13
    Location:
    Newport
    Good point

    Funnily enough me and the old man were nattering about this just a few days ago, Another thing which should always be compensated which of course living in Wales, We get a lot of these, is Quarries and terrain that detours the wind, Shooting into/or around a Groove is sometimes perilous to say the least.

    Ie Below the Detailed Sketch i managed to produce.
    <a href="http://s40.photobucket.com/albums/e241/Death_Guard_Jamie/?action=view&current=WindDirection.png" target="_blank"><img src="http://i40.photobucket.com/albums/e241/Death_Guard_Jamie/WindDirection.png" border="0" alt="Photobucket"></a>

    What Sir, Would you do in such a situation, May i ask - Just asking a question for the record, Always nice to get a second opinion on these things, Me personally i'd aim left and hope that left to right wind knocks it far enough so into can be knocked back right by the wind at the other side, But you may have a different opinion, Im not sure.
     
  3. PeteM

    PeteM New Member

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    441
    Location:
    Chagford, Dartmoor, Devon
    This

    Hard to say, not being there or having been there.
    Presuming that both winds are a similar velocity.
    I would probably go straight at it.
    Keeping in mind the old Field Target adage "When in doubt, give it nought".
    It's often surprising how that strategy will produce the correct result.

    But on reflection, of the angles of the wind to the POF (path of flight) in the illustration.
    I would aim just outside the right edge of the kill
    ;)
     
  4. Gibbs

    Gibbs New Member

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    Jan 3, 2009
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    388
    Location:
    North Cornwall
    I tend to do what I think a lot of people do in FT, which is put the wind into four or five categories.
    1# Inside the kill
    2# Edge of kill
    3# Outside of kill (sometimes estimates as 1,2 or 3 "kills of wind")
    4# Edge of plate
    5# Shear bravery/Madness (Somewhere off the plate)

    Using these categories can be limiting as kill zones are different sizes and plates are different shapes
    but these groups are a good framework on which to build a wind memory.

    When you see the top FT shots almost clear a course on a tricky day it proves to me there is still a lot more to it!! And a lot more to learn.
     
  5. PeteM

    PeteM New Member

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    Location:
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    Myself, I use mildots or in my case hash marks as windage calculators.

    Having practised in as many different wind conditions and speeds as possible
    (I try not to miss the opportunity of practising in extreme wind conditions)
    I am slowly building up a knowledge of aim points for various wind speeds and directions to POF.
     
  6. Jon

    Jon Member

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    Location:
    Nr Wolvo
    Got to ask Pete, how would you know the wind is doing that before taking the shot?

    A good 50% of shooters have had it when need to give more than 1/2" outside the kill, reckon another 25% up to 3/4 kill out leaving the rest to battle it out.
    Wouldnt say 1 1/2 kills out is a lottery, its starting to get enjoyfull then and what makes this sport.
     
  7. HotShot

    HotShot Active Member

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    Location:
    Barnsley, Yorkshire
    Club:
    Redfearns FTC


    Is that true? - The pellet will lose velocity as it travels so will spend longer in the far wind (assuming each wind covers the same area)

    But - will a small deflection early on give a greater deviation at distance?

    I am more confused now :eek: :confused:
     
  8. big_phil555

    big_phil555 New Member

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    Location:
    Wolverhampton
    Jon

    Harriers was good when it was 3 inches outside of the plate at 45 yards :D

    Mind you, the Welsh lads are used to a coupel of foot outside of the plate :eek:
     
  9. Jon

    Jon Member

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    So are we Phil.
    Love shooting in a presentable wind at least 60mm drift at 55 i start to get going.
    Just cant shoot with little or no wind:D
     
  10. Neale M

    Neale M Member

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    Location:
    Burntwood, Staffs
    Club:
    Far Coley Ftc
    Shooting in wind come to Far Coley Winter League on Sunday :D:D:D
     
  11. PeteM

    PeteM New Member

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    Location:
    Chagford, Dartmoor, Devon
    Well the thing is, as you know, one never knows exactly what the wind is doing.
    It is always a best estimation & then that is history as the situation has probably already passed.

    But it is possible otherwise the shot would never convert to a scoring point.

    Often I have changed my POA just before releasing the trigger as conditions have backed in that very moment.

    It's a matter of having a open mind to what the wind is actually doing & changing ones strategy if needs be.

    Reading the wind becomes a matter of intuition based on gained knowledge that is assimilated,
    through extensive practice in many varied conditions.
     
  12. PeteM

    PeteM New Member

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    Location:
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    A simple experiment is simply shoot at a target (paper is probably best) in a steady side wind

    Use the same POA for each shot,
    Shoot from 55 Yards to 10 yards in 5 yard increments and see what the result is.

    Then do the same thing for a near wind & then a far wind situation from 55 yards.

    Measure the wind velocity if you are able, to be replicate the same or at the least very similar conditions,
    if you have to do the experiment over a number of days.
     
    Last edited: Oct 13, 2010
  13. Jon

    Jon Member

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    Yes Neale hope you have ordered an even larger wind machine this time, that will sort the men from the boys.
     
  14. NJR 100

    NJR 100 Because I`m AWESIME !!

    Joined:
    Aug 10, 2009
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    5,577
    Location:
    Skewen
    Club:
    Avon Hawks, Tondu, Oaktree

    Because we had so much wind at tondu for gp 3, I have cancelled this sundays order:D

    So, want windy this sunday Farcoley, want to stay in the kill go tondu:).
     

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