270 WSM

Discussion in 'Reloading' started by J E Custom, Aug 16, 2006.

  1. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,307
    Joined:
    Jul 29, 2004
    COLT48
    I just finished building a 7WSM and in the process
    of seting the headspace found that the back of the
    case was touching the outer edge of the bolt recess.

    All of the WSM,s and Ultra mag,s have rebated rim cases.

    Bolt faces are normally only a few Thousanth larger than
    the rim so it stays under the extractor.

    The solution for me was to bevel the bolt recess at the
    Inside Dia. Just enough To clear the brass body.

    NOTE Be sure and check Headspace in case the brass was
    holding the head off the bolt face.

    If you have any question,s please let me know because this
    could be very dangerous"

    J E CUSTOM
     
  2. Pete L

    Pete L Well-Known Member

    Messages:
    66
    Joined:
    Feb 7, 2006
    I think you mean "Col48" !!! I have called him to inform him of your findings
     

  3. col48

    col48 Well-Known Member

    Messages:
    261
    Joined:
    Feb 17, 2006
    Hi J E CUSTOM
    i have lathed of 7 thou of the length of the bolt,after specking to nesika they told me that it looks like they had made the bolt face slightly to deep.
    i asked about the head space,and was told this should not be a problem.

    i have no means of measuring it at the present (IE no head space gage)and i live in the UK so if i get one it will have to be from the USA.

    how do you check head space using a case,???

    thanks for your reply
    Colin
     
  4. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,307
    Joined:
    Jul 29, 2004
    COLIN

    Try to find some .0001 or .0003 shim stock.

    Cut a small round piece that will fit inside the
    bolt face.

    Stick it on with a little touch of grease.

    Load a resized {empty}shell and close very slowly.

    It should not close on more than .0003 or .0004 .

    I hope this helps

    J E CUSTOM
     
  5. col48

    col48 Well-Known Member

    Messages:
    261
    Joined:
    Feb 17, 2006
    HI M8
    I will give it a go to make sure it is all right.
    better safe than sorry
    thanks for all your help
    Colin