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Annular rings on fired brass?
jimdeere
Member, Moderator Posts: 25,666 ******
I shot some reloads in my S&W 1006 yesterday. When I picked up the brass, it had these rings. I couldn't feel them, they're not deep.
What's more odd is they disappeared after running the through the sizing die.
These are A-USA cases.
Could the chamber be the issue?
Comments
You are correct. The fired case is a reverse imprint of the chamber. It doesn't hurt the case and the marks appear very minor. You could carefully polish the chamber a little to eliminate them (hopefully). Good luck.
If you carefully count the rings, you can determine how old the brass is.
When you smack brass with 20-50,000 PSI it will form to the steel tube it is shot in. As indicated those marks are normal and really not worth the effort to polish out because the brass relaxes after the shot and they are not causing extraction issues.
14 years?