I took the 970 to the range yesterday for an hour of therapy. Since I also took a few other toys I only put 70 rounds down range with this revolver. When I got home and started cleaning my 970, I noticed that I had pushed a small ring of lead out of the breach. It was about ¼ inch long. I was shooting Winchester Super X plated rounds. I only use plated bullets so my question is where did the lead come from? This hasn’t happened before so I’m curious. Any ideas?