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Reloading Berger Bullets

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Donut formation question

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  #1  
Unread 08-30-2013, 10:51 PM
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Join Date: Feb 2013
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Donut formation question

Hello,
I have some brass that I neck turned that has been fired 4x. If there is no donut formation at this point, would you expect to see it in the future?
Thanks,
Ken
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  •   #2  
    Unread 08-30-2013, 11:19 PM
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    Re: Donut formation question

    Mix some flour, yeast and water.

    or

    If you did it right ..... You will have to go to the donut store.

    I don't think there is a hard rule here.

    I have a lot of Lapua that has some cases with donut. TBH I think I got the turning a little short.

    So far, I've not seen a donut develop on those cases I 'got right' so I can't say.

    I don't shoot hot but as I understand it, hot loads will 'flow' brass back up into the neck. Then you ream. I got the reamer for the Lapua brass but have not processed that lot since it arrived.
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      #3  
    Unread 08-31-2013, 05:49 PM
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    Re: Donut formation question

    Donuts form with sizing. When you roll brass up the body into necks, you form donuts.
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      #4  
    Unread 09-02-2013, 11:58 AM
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    Re: Donut formation question

    Quote:
    Originally Posted by Mikecr View Post
    Donuts form with sizing. When you roll brass up the body into necks, you form donuts.
    Harumph
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      #5  
    Unread 09-02-2013, 02:44 PM
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    Re: Donut formation question

    I should have mentioned, if you don't have to do a lot of body sizing, and you're mindful not to cause donuts, you will never re-form them.
    You removed any with neck turning, and they just don't happen again on their own.
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