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  1. #1
    jporteous's Avatar
    jporteous is offline Junior Member Newb
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    Nov 2011
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    Prescott, Arizona, United States
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    Figuring out my IBO

    Is there a way to calculate my speed with just the the specs of my bow, draw length/lbs, arrow grain and tip grain..??
    Martin Bangel @ 30/60
    NAP Apache Drop & 8"Stab
    TruGlo Op & Quiv
    Easton Flatlines 400
    Muzzy MX-3
    Tru Ball Outlaw

    Stick Slingers Union
    jerAco Outdoors

  2. #2
    frantic29's Avatar
    frantic29 is offline Senior Member Semi-Hardcore
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    Jun 2011
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    Topeka, KS
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    Here is a calculator that is pretty close. It was only 3FPS off on my bow and it hasn't been more than 5 off on my friends stuff.

    http://backcountrybowhunting.com/articles/calc/

  3. #3
    jporteous's Avatar
    jporteous is offline Junior Member Newb
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    Nov 2011
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    Prescott, Arizona, United States
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    right on thanks man
    Martin Bangel @ 30/60
    NAP Apache Drop & 8"Stab
    TruGlo Op & Quiv
    Easton Flatlines 400
    Muzzy MX-3
    Tru Ball Outlaw

    Stick Slingers Union
    jerAco Outdoors

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