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Measuring Bullet Bearing Surface

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  #1  
Unread 03-08-2004, 05:58 PM
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Measuring Bullet Bearing Surface

What are you using to measure bullet bearing surface? Can you also measure boat tail variance with the same tool?
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  •   #2  
    Unread 03-09-2004, 01:28 AM
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    Re: Measuring Bullet Bearing Surface

    home made

    a piece of window glass with a light coat of paper ink ( same as use for news paper or artist work ) you roll your bullet on the window glass and ink print the bearing surface after you can easy measure with a caliper or a rule

    this method allow you to show pressure ring or uncylindrical bearing surface

    another way is to built a small frame for a old ( low cost or get from junk ) slide projector and display the bullet on a white wall , scale factor is easy to get with bullet lenght ratio .

    good shooting

    DAN TEC
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      #3  
    Unread 03-09-2004, 02:34 AM
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    Re: Measuring Bullet Bearing Surface

    Troy,
    I use the Stoney Point tools.

    BT variance in which way?
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    Brent Moffitt
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      #4  
    Unread 03-09-2004, 01:39 PM
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    Re: Measuring Bullet Bearing Surface

    me too--2 stony point tools on calipers. I wouldnt worry about the boattail if the BS is good [img]images/icons/wink.gif[/img]

    JB
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      #5  
    Unread 03-09-2004, 03:24 PM
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    Re: Measuring Bullet Bearing Surface

    Brent

    how you measure bearing surface lenght with a stoney point ?

    good shooting

    DAN TEC
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      #6  
    Unread 03-09-2004, 09:16 PM
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    Re: Measuring Bullet Bearing Surface

    Thanks for the answers gents. I am going to check out the Davidson collars listed in Sinclairs. I was just wondering what people were using. I have been shooting really good CRO bullets but want to try a different caliber and will need to measure bullets.
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      #7  
    Unread 03-09-2004, 09:57 PM
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    Last edited by Sheldon; 08-30-2009 at 03:42 PM.
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