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Archived [ARCHIVED THREAD] - Funny Colored Cases
Posted: 10/10/2002 5:01:39 PM EDT
I must not have been paying attention to my ammo
but now i am.  I have resently purchased 500 rounds of Federal XM193.  I was putting it on stripper clips when i noticed that the neck and sholder area of the cases is discolored.  It looks like it has had heat applied to it.

What gives??  Could you guys give me an explanation as to why this is done to the cases.

Thanks in advance.

Link Posted: 10/10/2002 6:15:43 PM EDT
[#1]
From the AmmoFaq


Just about all necked rounds use a heat process called "annealing" to shape the neck of the casing.  Producers of military ammo don't bother to spend the extra time and effort in production to polish the brass after annealing, unlike most commercial ammo.  The result is that discoloration that makes it look like someone took a blowtorch to the ammo.  Don't worry, it won't impact the performance in any way.
Link Posted: 10/12/2002 5:53:47 PM EDT
[#2]
Thanks  VA-gunnut.

I looked there before i posted but did not
see any thing on what may cause it.

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