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Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

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  #8  
Unread 12-17-2012, 03:09 PM
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Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

Thanks guys, really appreciate the advice!
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  •   #9  
    Unread 12-22-2012, 04:19 PM
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    Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

    Quote:
    Originally Posted by royinidaho View Post
    The 7-08 partially necked down.

    I don't know the most proper thickness but use the heavy back of a writing tablet to cut as a spacer under the ring of the sizing die.
    Thanks for the advice and interest guys! Tried necking down and fire forming a 7-08 and it worked like a charm! Really appreciate it!
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      #10  
    Unread 12-26-2012, 09:52 AM
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    Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

    You don't have to go to 7mm08 brass just load the 243 bass with the bullets into the lands soas to hold the case against the bolt. Lube the case and shoot. Now back off your size die so you don't push the shoulder back again.
    Brush
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      #11  
    Unread 12-26-2012, 12:54 PM
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    Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

    Quote:
    Originally Posted by Brush4646 View Post
    You don't have to go to 7mm08 brass just load the 243 bass with the bullets into the lands soas to hold the case against the bolt. Lube the case and shoot. Now back off your size die so you don't push the shoulder back again.
    Brush
    Thanks Brush, I'll try that!
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      #12  
    Unread 12-27-2012, 01:51 PM
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    Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

    Quote:
    Originally Posted by Brush4646 View Post
    You don't have to go to 7mm08 brass just load the 243 bass with the bullets into the lands soas to hold the case against the bolt. Lube the case and shoot. Now back off your size die so you don't push the shoulder back again.
    Brush
    +1 for this, it's what I was gonna recommend... Just seat the bullets far enough out to engage into the rifling so that it will keep the case head firmly against the bolt face. Just don't fireform with max loads, back it of a little, but don't use overly reduced loads either, as the fireforming would not be complete then.
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      #13  
    Unread 12-27-2012, 02:21 PM
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    Re: Musgrave 243 with oversize chamber - fire forming tips to avoid case stretch?

    Quote:
    Originally Posted by bowhunthard View Post
    +1 for this, it's what I was gonna recommend... Just seat the bullets far enough out to engage into the rifling so that it will keep the case head firmly against the bolt face. Just don't fireform with max loads, back it of a little, but don't use overly reduced loads either, as the fireforming would not be complete then.
    Thanks, tried it this afternoon and it works!
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