6X47 Lapua chamber reamer

Discussion in 'Gunsmithing' started by dogkillers, Dec 15, 2012.

  1. dogkillers

    dogkillers New Member

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    Dec 15, 2012
    Hi, I'm building a 6X47 Lapua. I'm using Pacific. Neck of .272. Using Berger 105gr. match hybrid # 24433. with a dumy load Oal at 2.800 I have only 1/8 neck holding the bullet I would like 1/4 2.800 is Bergers sugested OAL.. I asked Pacific for .030 freebore maybe even zero freebore. They say .090 is best. Throat angle 1-30. Neck with bullet is .269. Am I overly concerned?
     
  2. Edd

    Edd Well-Known Member

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    I think a 2.800 OAL is too long.
     

  3. kjcpoint

    kjcpoint Member

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    Jul 27, 2011
    2.635 is my coal with berger 105vld.

    My reamer is .272nd and .104fb.

    Go with the .090fb as suggested.

    Kyle
     
  4. SBruce

    SBruce Well-Known Member

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    Seat your bullet so the bearing surface/boat tail junction is just slightly ahead of the neck/shoulder junction of the case. When I do this with my 6-47, the OAL with Custom Competition bullets is 2.625" and they're just touching the rifling.

    If only 1/8 of the neck is holding the bullet, you'll run out of neck before you ever get a really good load developed and drops figured. The throat on the gun will erode from firing and you'll have to seat the bullets out further if you wanna be close to the lands. I think 2.8" is probably too long.

    You can send the dummy (loaded how you want it) to Pacific, or just call Dave and tell him your specifics and he should be able to go off of that.
     
  5. dogkillers

    dogkillers New Member

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    Dec 15, 2012
    Thanks I sent a dummy round at 2.725 OAL to Pacific. Wayne
     
  6. Willys46

    Willys46 Well-Known Member

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    When I had mine ground I he suggested the a .123 FB. That way I could use either the 115 or 105's.