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Primer sizes

Mississippi Gun Owners :: Reloading/Gunsmithing :: Reloading/Ammunition

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Primer sizes

Post by crazyace85 on Fri Sep 10, 2010 12:54 am

I have some 223 brass that cci 400 primers won't fit. Do these require the military primers. I think this brass was from some m855 rounds.

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Re: Primer sizes

Post by jbpmidas on Fri Sep 10, 2010 5:16 am

Are the primerpockets crimped? If so you must remve the crimp.

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Re: Primer sizes

Post by crazyace85 on Fri Sep 10, 2010 7:49 am

Not sure. The primers came out easy bit they are .003 smaller than my others. If they are crimped what do I remove of with.

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Re: Primer sizes

Post by Doug Bowser on Fri Sep 10, 2010 8:03 am

I use an RCBS primer pocket swager.

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Re: Primer sizes

Post by captain-03 on Fri Sep 10, 2010 9:49 am

I often use CCI 400 in .223 --- Bet your brass is LC (Lake City). In that case, they could be crimped in and they will not fit. You will need to swage the primer pocket to get most any type primer to fit. I would suspect that they measure smaller because of the depriming stage ...

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Re: Primer sizes

Post by crazyace85 on Fri Sep 10, 2010 10:22 am

Aight I'll add that to my list for a third order from midway USA I got some lc on the way but I'm working with some that has FC above primer and 06 below. Not a hundred percent on the 06 but that's what it looks like.

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Re: Primer sizes

Post by Xd357 on Fri Sep 10, 2010 11:28 am

It might be fc-90.

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