Originally Posted by Jim K
It should be obvious, but I wish rhmc24 had mentioned it. When dealing with rimfire chamber "dings", don't forget to fix the cause of the ding. Many old single shot rifles have homemade firing pins that are too long, so even if the ding is fixed it will recur the first time the gun is dry snapped. Fix the ding? Sure, but don't forget to fix the reason for the ding.
Jim, I know you're right but I've seen this occur in many modern semi auto weapons too that some people think it's ok to dry snap. I can't say how late of a model I've seen it happen but 70's and 80's at least. It just seems like a simple fix for the manufacturer not to correct. I wonder if enough rounds has been pumped through it, is it possible for transference through the case rim to cause reoccurence. Probably not, just a passing thought.