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Rifles, Bullets, Barrels & Ballistics Applied Ballistics

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no chrono

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  #1  
Unread 03-11-2010, 10:13 PM
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Join Date: Jul 2009
Location: Idaho
Posts: 581
no chrono

ok Im fairly new to this
is there a way I can figure my approx velocity with out a chronograph
Im shooting a 7mm rem mag with a 160 accubond over 62 gr of RL22 winchester mag primers and case
thanks
retiredcpo
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  •   #2  
    Unread 03-11-2010, 10:17 PM
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    Join Date: Feb 2008
    Location: Sonoma County, CA
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    Re: no chrono

    Some of the load programs that members are using can apparently get it pretty close. Do you use Exbal? If so, you can test your drops at various ranges and validate the trajectory. This will adjust your velocity.
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      #3  
    Unread 03-11-2010, 10:24 PM
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    Join Date: Jul 2009
    Location: Idaho
    Posts: 581
    Re: no chrono

    nope no exbal not even sure what that is
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      #4  
    Unread 03-11-2010, 11:57 PM
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    Join Date: Jul 2004
    Location: Texas
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    Re: no chrono

    The way most do it is to shoot at 100yards,200yards,300yards,400yards and 500yards
    using the same point of aim and then compare the drop to ballistic chart for that brand
    and weight of bullet.

    And if you can check it at longer distance it will help to get a more true velocity.

    It is not as good as a chronagraph but it will get you close.

    J E CUSTOM
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      #5  
    Unread 03-12-2010, 07:59 AM
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    Join Date: Jun 2001
    Location: Potomac River
    Posts: 5,071
    Re: no chrono

    Send me a PM with your email address in it and I will send you a sheet of instructions on how to do it.

    Jim
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    The Smokin Fur Rifle Club
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