Revolver breech face pitting...should I worry?

[ander]

I was cleaning my S&W 642Pro this evening and noticed some pitting on the breech face.

I'm guessing this was from a bad round I fired. Is this normal and should I worry?

[ander]

Has anyone seen this before?

[bjl333]

Send the Pics to S & W and see what they say! Lifetime Warranty...

[ojisan]

Looks like one pit in the aluminum frame and one pit in the steel firing pin bushing.
When the gun is fired, the back of the case hits hard against the breechface.
Anything that is in between the case head and breechface (dirt, etc) is going to get smashed flat....unless it is really hard, in this case, it has to go somewhere so it will make room for itself by forming a dent.
(Sometimes even new brass cases will have small burrs on them).
The aluminum frame is relatively soft and easily dented.
The steel bushing is pretty hard but can be dented as we see.
I'm sure the brass cases that made these dents are long gone...if you had them I suspect they will show obvious matching marks.

I wouldn't worry about it.

[ander]

Great info. Thanks, guys!