checking the neck of brass for alingment

Discussion in 'Reloading' started by ig25, Jan 18, 2012.

  1. ig25

    ig25 Well-Known Member

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    how many of you mic the necks and through the ones out that are 3 or 4 thousandth off.
     
  2. sakoluvr

    sakoluvr Well-Known Member

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    I don't mic the necks, but look for uniformity using a Redding tool. I also check for concentricity with a Redding tool.
     
  3. Mikecr

    Mikecr Well-Known Member

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    You talking about thickness variance, or runout?
     
  4. ig25

    ig25 Well-Known Member

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    Re: checking the neck of brass for alignment

    thanks for the reply. with out me knowing what and how to ask the question intelligently you answered to what i was wondering

    I am having trouble with grouping using bergers or smks. i can get to 1' groups with some and 1 1/2 with others. through some reading discover that some of my brass {remington} may be the issue.
     
  5. CRNA

    CRNA Well-Known Member

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    Re: checking the neck of brass for alignment

    Have you played around with the seating depth to see what your rifle likes? I shoot Bergers and SMKs through my 7mmRM and it does make a noticeable difference. Maybe you have already done that, but if not, I would start there. The SMKs were not as sensitive to depth in my experience with my rifle as the Bergers were. The SMKs shot best 0.042 off the lands. The Bergers liked touching the lands. In the case of the Bergers while I was working up the load my groups were massively affected by seating depth.
     
  6. ig25

    ig25 Well-Known Member

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