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AR15.COM
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6/4/2009 4:06:34 PM EDT
I saw in another topic that once fired brass from a machine gun would be cheaper than

once fired brass from a bolt gun,why is that?Does the machine gun "hurt" the brass?

Would there be a problem using machine gun brass in a bolt gun?
6/4/2009 5:00:22 PM EDT
[#1]
MGs have larger chambers, bolt guns have tighter chambers.  Consequently, the brass in an MG get stretched and stressed way more than brass in a bolt gun.  

6/4/2009 5:44:01 PM EDT
[#2]
+1.  Bolt gun brass is vastly superior to MG brass.  MG chambers are made to function, period, and brass life is not a concern.  You'll get 3-5 firings after hellish force is required to size them the first time on MG brass.  Expect 15 to 20 firings on new brass fired only in your bolt gun, annealed, and partial FL sized.

Considering the work required to initially prep a case (trimming, neck tar removal, primer crimp removal, primer pocket unforming, etc) it isn't a bargain to by $0.60 per case MG brass compared to $1.50 new, never fired brass.

I wouldn't buy brass that i'm not CERTAIN was fired in a bolt gun....meaning someone telling you so that you don't absolutely trust has the potential to get burned...I did once.   So just buy new brass if you can.

-David
Edgewood, NM
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