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Thread: Lots of links

  1. #1
    REP: The Airgun Shop

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    Default Lots of links

    [link=http://www.incompass.co.za/index.php?option=com_dwodp&c=/Recreation/Guns/Airguns/]Just found this...[/link]
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  2. #2
    Inactive Member

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    Good one Farmer.
    Air Rifle SA Forums

  3. #3
    Inactive Member

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    Found this on one of Farmer's links.

    To find out the energy of a rifle
    fps x fps x grains / 450240 = ft/lbs

    To convert ft/lbs to Joules
    ft/lbs x 1.355817 = Joules

    To convert Joules to ft/lbs
    Joules x 0.737562149 = ft/lbs

    1 grain = 0.06479891 grams = 0.002285714 oz (ounces)

    1 Kilogram = 2.2046 lbs (pounds)

    1 inch = 2.54 centemetres

    .177 calibre is 4.5mm
    .20 calibre is 5.05mm
    .22 calibre is 5.5mm
    .25 calibre is 6.35mm

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