velocity spreads

Discussion in 'General Discussion' started by screech, Sep 18, 2006.

  1. screech

    screech Well-Known Member

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    Nov 26, 2005
    What should I do? I am getting large velocity spreads. I am not sure but it might be my chrony is screwed up. Any suggestions? Barrel prep or any thing. Thanks
     
  2. J E Custom

    J E Custom Well-Known Member

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    Jul 29, 2004
    Screech

    Poor Standard deviations are normaly load related not barrel
    related.

    Example;
    Poor ignition caused from old primers or powder.
    Some times the primer can be to hot.
    If brass is getting old neck tension can vary from round
    to round.It may need to be annealed.or replaced.

    Also check freebore (bullet to rifle lands) if you are
    real close some could touch and others not.

    Some times the lock ring on your dies can move causing
    this to change.

    I hope this will help

    J E CUSTOM
     

  3. screech

    screech Well-Known Member

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    Joined:
    Nov 26, 2005
    Thanks