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Old April 20, 2013, 10:11 AM   #1
fshfindr
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Burned Brass

My 380 was getting a little restless so I took it to the range yesterday to give it some exercise. All was fine until I started policing my brass. I saw burn marks on one side of the brass. It went halfway around and about halfway down. I'm thinking it might not have been well crimped. Anybody have ideas, I'm listening, I examined the gun and found no marks on it. Any ideas will be appreciated.

Richard L.
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Old April 20, 2013, 10:18 AM   #2
ScottRiqui
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I've seen similar marks on my .380 brass, as well as a few other calibers. Here's a typical shot of what the .380 brass looked like:



I'm pretty sure it's just a result of shooting relatively low-pressure loads. The case doesn't expand enough to seal completely against the chamber walls, so a little bit of the combustion gases work backward between the chamber wall and the case. Like you, I didn't see any damage to the chamber itself. Subsequently, I bumped up the powder charge a little bit, and the "burn" marks went away.
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Old April 20, 2013, 11:01 AM   #3
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That is exactly what mine look like, Thanks.
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Old April 20, 2013, 01:23 PM   #4
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I don't think it's burned. Generally what causes that is a low pressure round or an over generous chamber. If the case doesn't expand to completely seal against the chamber walls you will get that kind of soot deposit from the burning powder. It usually cleans off if you tumble the brass with a good medium.

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Old April 20, 2013, 02:10 PM   #5
fshfindr
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So I'll stop being concerned, thanks.
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Old April 20, 2013, 02:42 PM   #6
buck460XVR
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So Fshfindr, who is the maker of your .380 revolver?
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Old April 20, 2013, 08:18 PM   #7
gwpercle
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fshfindr,
Do as Scott suggest and bump up your powder charge a bit, you are not getting enough pressure. When you get a bit higher pressure the sooty case will stop and you might notice a cleaner burn ( less crud left in barrel and action. Too little pressure causes problems just like too much pressure causes problems.
Keep an eye out for jacketed bullets and low pressure loads...sometimes the bullet will stick in the barrel ...and if you shoot again..Trouble.

Gary
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Old April 21, 2013, 05:22 PM   #8
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Yup, blow by caused by low pressure and/or a chamber on the large side.
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Old April 21, 2013, 11:57 PM   #9
Cheapshooter
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Quote:
So Fshfindr, who is the maker of your .380 revolver?
Where did he say it was a revolver? "Policing my brass" would certainly indicate a semi-auto.
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Old April 22, 2013, 01:14 AM   #10
Hammerhead
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Where did he say it was a revolver? "Policing my brass" would certainly indicate a semi-auto.
I think it was a rhetorical jab because the OP posted this in the revolver forum.
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Old April 22, 2013, 01:20 AM   #11
BigTex308
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Re: Burned Brass

I believe there are several revolvers chambered in .380acp...




Ike
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Old June 7, 2013, 06:55 PM   #12
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Not a revolver, a 9mm Russian Makarov converted to .380.
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Old June 7, 2013, 07:53 PM   #13
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Lol wrong forum guy.
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