Flash hole sizes

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  • indygunguy

    Expert
    Emeritus
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    110   0   0
    Dec 12, 2010
    1,338
    48
    NE Side of Indy
    So I'm de-priming and resizing a huge bucket of 223/556. On about 2 out of every 100 pieces of brass my depriming rod gets stuck in the flash hole... and with Redding dies, that means the rod comes out of the die, and stays in the brass. So I have to get out a hammer and a punch to get the rod out of the flash hole, take the die apart, reinstall the rod, reassemble, and readjust the die.

    Pain in the a**.

    But I think I figured out why this is happening. The offending brass seems to have much smaller flash holes than the others.

    I can't be the only one dealing with this... so what you you guys do about it? Just ID what headstamps have the small holes and...?

    This was a difficult picture to take, but it shows good ole' Lake City Brass on the left and the stupid "HB" headstamp on the right with the small hole:

    picture.php


    Any thought or suggestions?

    Thanks!

    :rockwoot::ingo::ingo::ingo::rockwoot:
     

    Aszerigan

    Grandmaster
    Industry Partner
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    336   0   0
    Aug 20, 2009
    5,592
    113
    Bean Blossom, IN
    Get yourself a Lee universal decapping die. Punch the primers, then resize. Sometimes offset flash holes will do the same, or worse - they'll break your pins.
     

    msd

    Sharpshooter
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    0   0   0
    Sep 10, 2011
    312
    16
    Princeton
    Good thing about the Lee die is too much pressure and it'll pop the decapping rod, then you know you got a tight one. Reset, 10 sec later back in business.
    I've had a few from some brass I bought at a gunshow last fall where the flash holes were a tad off.
    Luckily I use the Lee decapper and saved myself alot of time and headaches.
     

    fireball168

    Master
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    23   0   0
    Dec 16, 2008
    1,745
    38
    Clinton
    Get yourself a [STRIKE]Lee[/STRIKE] universal decapping die.

    What he said, except I've found the Lyman to be much nicer if you are doing any sort of production.

    Afterwards, I run the offenders on a Sinclair flash hole deburring tool setup with enough chamfer to send the depriming pin in the right direction on future sizing events.
     

    Leo

    Grandmaster
    Rating - 100%
    30   0   0
    Mar 3, 2011
    9,806
    113
    Lafayette, IN
    +1 on the decap die. Also, even the regular Lee dies do a fine job on the odd sized holes. If anyone remembers the old "lee Loader" kits, you can deprime with nothing more than a small hammer and punch with the brass over a hole in a block of wood.

    The only way I know to get around working on brass is to pay the price for new brass. But of course new brass is up to ten times the money, so I figure the prep time is like working for cash. If I am saving 90% I feel better about it. The brass that is giving you trouble will only be trouble the first time, just like the primer crimp on Nato spec brass. Good luck.
     
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