1. Cheyenne19

    Cheyenne19 Well-Known Member

    Messages:
    85
    Joined:
    Feb 9, 2007
    I'm about to get a reamer ground and I need advice on freebore. I want to run the 180's at a COAL of 2.960" out of the modded AI mags. Does anyone have any idea what freebore I would need?
     
  2. TMR

    TMR Well-Known Member

    Messages:
    555
    Joined:
    Mar 26, 2006
    My reamer has .045" freebore and 180's hit the lands at 2.970. Just barely fit in the modded mag.
     

  3. Cheyenne19

    Cheyenne19 Well-Known Member

    Messages:
    85
    Joined:
    Feb 9, 2007
    Thanks for the info. I would've guessed more than .045". How close is the bullet to the neck shoulder junction?
     
  4. TMR

    TMR Well-Known Member

    Messages:
    555
    Joined:
    Mar 26, 2006
    It sets quite a bit below it....Definitely doesn't have any affect on accuracy, and still allows it to fit in the mag. Anything more runs out of mag room. Might want to wait about a month when Seekins brings out his long WSM detachable mags...3.11" oal.