I had a similar experience with Ruger also. I stuck a bullet in the barrel of my GP100. When I got it pushed out with a dowel rod it left a "ring" of what I thought was copper. I tried everything I could think of to remove it from brass rods to solvent but couldn't remove it.
I contacted Ruger and they told me to send it in. I sent it in via UPS (who said it had to go 2nd day air @ $80). Ruger said that there was a manufacturer defect in the barrel and replaced it with a brand new one free of charge. They sent it to a lgs and he charged me $30 for the ffl transfer.
I sent a letter to Ruger explaining that their website said that the revolver had to be sent via UPS and since the weapon had a manufacturer defect, I would appreciate it if they would refund me the cost. I never heard anything from them in response for 2 weeks. The letter I received apoligized for the weapon and contained a check for $110!
Now thats what I call customer service!