223 brass splitting EBR's


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greyling22
November 28, 2008, 08:43 PM
my friend's AR is throwing 223 brass that is split from case mouth all through the neck. I assume his gun is chambered in 5.56. is this normal? should he stop shooting 223? will it damage his chamber? thanks.

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WardenWolf
November 28, 2008, 09:14 PM
He should definitely stop until he finds out what the problem is. The escaping gasses can permanently damage his chamber, and in fact might have already.

Kurt_D
November 28, 2008, 09:19 PM
Yeah, I've had steel cased ammo split at the neck in my Bushy. I wrote it off as steel not being as springy as brass. Never had an issue with brass case, so I would try to find out what up before running any more rounds. It could just be a bad lot or just plain bad ammo. What kind was it?

If your barrel is chromed it's probably ok right now.

WardenWolf
November 28, 2008, 09:25 PM
If it's reloaded ammo, I'm guessing the brass is just shot. If it's new ammo, or a new upper with name-brand ammo, it sounds like his chamber's out of spec.

X-Rap
November 28, 2008, 09:40 PM
The brass has become work hardened in the neck area. There is an annealing process but if it were me I would junk the brass.
Is all the brass spliting?

greyling22
November 28, 2008, 09:57 PM
75% of the new brass was splitting. the steel case stuff (223) was fine. I forget the brass brand, but it was not high end.

WardenWolf
November 28, 2008, 10:00 PM
Bad batch. I'd complain to the manufacturer.

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