Drag Function "G" number

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by BrentWin, Feb 11, 2006.

  1. BrentWin

    BrentWin Member

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    Drag Function \"G\" number

    I'm a newbie to the sight and I'd appreciate it if someone could explain the "G" entry found on ballistics programs.

    Thanks
    Brent
     
  2. Michael Eichele

    Michael Eichele Well-Known Member

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    Re: Drag Function \"G\" number

    G refers to "drag model" AKA "drag deceleration". G1, G5, G7 are all drag models. Most manufactures use G1 for tests and info. In the real world, few bullets will actually fly according to the drag model G1. Some will use G5 or others G7, and some will not quite fit at all and a custom model will have to be used. There are 2 numbers needed that will calculate accurately the rate a bullet will decelerate (excluding apmospheric conditions) Its overall BC and its drag model. They are differant and yet so closley intertwined. It is a very in depth subject and hope others here share their understanding of this topic.

    PS Welcome to the board! /ubbthreads/images/graemlins/smile.gif
     

  3. Michael Eichele

    Michael Eichele Well-Known Member

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  4. BrentWin

    BrentWin Member

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    Re: Drag Function \"G\" number

    Thanks for the help.

    Brent