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Thread: Ring/groove at base of case shoulder

  1. #16
    Member Tikka7mm08's Avatar
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    No

  2. #17
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    Never seen this ��

  3. #18
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    some ideas to try.. from a contact I'm very lucky to know.
    If you're neck sizing it might be a sharp edge on your collet / not enough lube. Maybe a lube build up. Barrel might need a borescope to look for a carbon ring or somethin. Are you gas annealing?

  4. #19
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    Quote Originally Posted by 6x47 View Post
    Bit of a mystery. So you're certain this wasn't there from the first fired cases?
    The answer is No......no you're not certain, or no it wasn't there on a first fired case.
    @grandpamac pointed out a fault with the die too.

    So two things to eliminate.....change your die and check your chamber with a bore scope. It could be a chamber fault from a damaged reamer.
    Moa Hunter likes this.
    The early bird gets the worm, but the second mouse gets the cheese....

  5. #20
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    In the first post the cases were going to be trimmed. If they are too long is it possible that with the die you are using that the necks cannot lengthen as the case is re-sized, that they are somehow held or stopped ?
    PS never had this with a 270 !

  6. #21
    Member Tommy's Avatar
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    Yeet it, clean dies, start over
    Identify your target beyond all doubt

  7. #22
    Member Tikka7mm08's Avatar
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    Sorry...held up with planes and travel.

    No not certain it wasn't there in first reloads. Will shoot fresh round tomorrow.

    Cleaned dies, checked shoulder bump, blacked out case to see die working.

    Put new brass thru FL 6 times and photo beside new not FL sized suggest dies are OK. Bugger that was easiest solution.

    Checked box of empties and sure enough there is a short case. I was firing to finish some loaded rounds off without much attention to ejected rounds. Rounds still chamber so I guess this happened after the case ejected.

    Hopefully fired new brass tells story tomorrow. Or then go-no go gage.



    Sent from my SM-G998B using Tapatalk

  8. #23
    Member Tikka7mm08's Avatar
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    New case run thru FL die 6x on right. I know the die isn't having to work the brass as much but sized fired brass show 2 thou bump so not squashing it.



    Sent from my SM-G998B using Tapatalk

  9. #24
    Member Marty Henry's Avatar
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    This is how the experts do it, whatever it is
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    veitnamcam, tetawa, Tommy and 2 others like this.

  10. #25
    Member Tikka7mm08's Avatar
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    LOL yeah got some of those. Possibly brass was left to get too long...and putting a crimp in it. Makes sense.
    dannyb likes this.

  11. #26
    Member Tikka7mm08's Avatar
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    Just fired factory case. It is the rifle.



    Sent from my SM-G998B using Tapatalk
    veitnamcam, Micky Duck and Shamus_ like this.

  12. #27
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    Bugger !
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  13. #28
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    That makes more sense now
    What is the gun/barrel?

  14. #29
    Member Tikka7mm08's Avatar
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    Kimber Montana.

  15. #30
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    Get the chamber repolished.
    Summer grass
    Of stalwart warriors splendid dreams
    the aftermath.

    Matsuo Basho.

 

 

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