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Wind Flags??

Josey1Josey1 Member Posts: 9,598 ✭✭
edited April 2002 in General Discussion
As I've mentioned before,my bud and I have been doing some .50 BMG shooting recently.At the distances we are shooting there is a great difference in the wind speed,direction and gusts.I've been browsing the internet looking for a good wind flag to set out there with the target at around 500-1000 yards,but having never used one before I was wondering if anyone could give me some advice.I'm assuming for this range I will need a weather vane type with the spinner on front and the tails on back.I was also interested in a flag for more local distances of say 100 to 200 yards,for this distance I could maybe get away with a nylon flag(not for the .50 but for .223-.308)?Any and all help would be greatly appretiated,Josey.

"If cowardly and dishonorable men sometimes shoot unarmed men with army pistols or guns, the evil must be prevented by the penitentiary and gallows, and not by a general deprivation of a constitutional privilege." - Arkansas Supreme Court, 1878
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Comments

  • will270winwill270win Member Posts: 4,845
    edited November -1
    When using a cotton flag estimate the angle of the dangle divided by 4 Equals the wind velocity. Say you got the flag at 40 degrees. 40/4=10mph. With a nylon flag, all bets are off but generally give you final result a times .5. So in the above case you are looking at 5 mph with a nylon flag.

    "Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." -Plato

    ~Secret Select Society Of Suave Stylish Smoking Jackets
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  • idsman75idsman75 Member Posts: 13,398 ✭✭✭
    edited November -1
    When using this type of calculation for wind velocity, should you not also consider the mass of the flag? What are the dimensions of an appropriate flag to use the "divide by 4" method. Obviously a larger flag would not be moved so much as a flag of smaller dimensions and it would seem that one would run the risk of under-calculating wind veolicty.

    SSG idsman75, U.S. ARMY
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  • will270winwill270win Member Posts: 4,845
    edited November -1
    This formula should only be used with certified range flags like those seen in competition, kinda costly.

    "Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws." -Plato

    ~Secret Select Society Of Suave Stylish Smoking Jackets
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  • varmit huntervarmit hunter Member Posts: 1,674 ✭✭✭✭✭
    edited November -1
    Josey,Take a empty case, And seat a bullet in it.Use a aluminum arrow with a field tip.Drill one side of the case so the arrow will fit in.On the other side drill just large enough for the tip to stick through.Hack saw a slot in the bottom of the case,Take a thin piece of sheet metal,Or thick plastic to make a tail fin.You can make the tail fin bigger if you use plastic.Just a cheap weather vain.Works great.You can hot glue flagging tape to the tail fin also.

    A unarmed man is a subject.A armed man is a citizen.
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  • groundhog devastationgroundhog devastation Member Posts: 4,495
    edited November -1
    will270 win, What is a good source for these certified range flags? GHD
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