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Cosine Chart

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  #1  
Unread 08-06-2011, 12:37 AM
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Cosine Chart

Ok does anyone remember this chart from grade school: Printable Multiplication Table

So do they make a cosine angle chart which would be similar?

I understand to multiple the range by the cosine for the range. I was just looking to simplify this process without having to make my own!
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  •   #2  
    Unread 08-06-2011, 02:25 AM
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    Re: Cosine Chart

    Quote:
    Originally Posted by C.O. Shooter View Post
    Ok does anyone remember this chart from grade school: Printable Multiplication Table

    So do they make a cosine angle chart which would be similar?

    I understand to multiple the range by the cosine for the range. I was just looking to simplify this process without having to make my own!
    Here you go!

    Table of Cos(a)
    __________________
    -----------------------------

    -----------------------------
    HEBREWS 13:8
    Jesus Christ the same yesterday, and to day, and for ever.

    Our Lord Jesus said that as it was in the days of Noah and
    also as it was in the days of Lot so it shall be in the days...
    It's happening again!!! God sent to us His prophet, and His Word
    to this generation and we once more are rejecting it as was prophesied!!!

    ---> As promised, God Sent His Prophet to us!
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      #3  
    Unread 08-06-2011, 10:51 AM
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    Re: Cosine Chart

    Yeah I got that one. I was talking about one with yards in the first column and the angles across the top! I know it wouldn't be for every angle at every range, but would be close.

    example would be 20 degree angle at 500 yards = 470

    0 10 15 20 25 30 35 40 45 50 55 60
    100
    200
    250
    300
    350
    400
    450
    500 ---470
    550
    600
    650
    700
    750
    800
    850
    900
    950
    1000

    I am not trying to re-invent the wheel trying to make things easier on the fly! I guess I could go through and input all angles for the various ranges.

    Thanks
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      #4  
    Unread 08-06-2011, 05:43 PM
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    Re: Cosine Chart

    You need to understand the method you're trying to use is the most enacurate one
    out there.

    Here's a link to some good reading:
    News :: Angle Shooting by Ward W. Brien - Sniper Tools Design Co - Home of the Angle Cosine Indicator

    Here is the table:

    __________________
    -----------------------------

    -----------------------------
    HEBREWS 13:8
    Jesus Christ the same yesterday, and to day, and for ever.

    Our Lord Jesus said that as it was in the days of Noah and
    also as it was in the days of Lot so it shall be in the days...
    It's happening again!!! God sent to us His prophet, and His Word
    to this generation and we once more are rejecting it as was prophesied!!!

    ---> As promised, God Sent His Prophet to us!
    Reply With Quote
      #5  
    Unread 08-07-2011, 12:01 AM
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    Re: Cosine Chart

    Eaglet

    As per that article:

    "In the second method of obtaining the corrected for gravity distance to target, known as the "Improved Rifleman Method," the ACI still plays its role, however the cosine number is multiplied to your minute of angle (MOA) or mil-radian (MILRAD) hold for the specified distance. This is more accurate than the Rifleman method."

    ex. I am shooting a 20 degree angle at 600 yards. For me, 600 yards is 12 MOA. Therefore .94x12 = 11.28) So make the adjustment for 11.28 and shoot?

    Yes, that seems easier than the other method!

    Bare with me I am trying to learn!
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      #6  
    Unread 08-07-2011, 05:04 AM
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    Re: Cosine Chart

    C.O. Shooter , you got that one right.

    Remember, it's only more accurate. It still falls short at times but it's a way
    to go about it when you don't have any other choice.
    __________________
    -----------------------------

    -----------------------------
    HEBREWS 13:8
    Jesus Christ the same yesterday, and to day, and for ever.

    Our Lord Jesus said that as it was in the days of Noah and
    also as it was in the days of Lot so it shall be in the days...
    It's happening again!!! God sent to us His prophet, and His Word
    to this generation and we once more are rejecting it as was prophesied!!!

    ---> As promised, God Sent His Prophet to us!
    Reply With Quote
      #7  
    Unread 08-07-2011, 09:01 AM
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    Join Date: Jul 2011
    Location: Pennsylvania
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    Re: Cosine Chart

    As of the other night, I converted my click chart to MOA! This will for sure be faster making adjustments rather than counting clicks. With the above method going from 12 MOA to 11.28 MOA just seems to make more sense and a simpler way of doing things!

    So in your opinion, the chart you provided with the 1000 different number combinations would be good for what if anything?


    Thanks again.
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