Measuring Bullet Bearing Surface

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Troy, Mar 8, 2004.

  1. Troy

    Troy Well-Known Member

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    What are you using to measure bullet bearing surface? Can you also measure boat tail variance with the same tool?
     
  2. DANTEC

    DANTEC Well-Known Member

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    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
     

  3. Brent

    Brent Well-Known Member

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    Troy,
    I use the Stoney Point tools.

    BT variance in which way?
     
  4. jb1000br

    jb1000br Well-Known Member

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    me too--2 stony point tools on calipers. I wouldnt worry about the boattail if the BS is good [​IMG]

    JB
     
  5. DANTEC

    DANTEC Well-Known Member

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    Brent

    how you measure bearing surface lenght with a stoney point ?

    good shooting

    DAN TEC
     
  6. Troy

    Troy Well-Known Member

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    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.
     
  7. Sheldon

    Sheldon Well-Known Member

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    Last edited: Aug 30, 2009