Brass filings

[JeffR]

So, after shooting my 30-06 today, I found a residue of fine brass shavings when I was cleaning the chamber. I examined all the used brass, and can't see anything out of the ordinary.
I haven't ever seen this before, is it something I should be concerned about?

 

[raks]

Is it a semi? All of my semi-autos wind up with flakes of brass in the action from time to time.

 

[JeffR]

Nope, bolt action.

 

[John Y Cannuck]

Likely source is the extractor.
Probably nothing to worry about, unless you are having sticky extractions.