Carbon and copper fouling
Unclenick and Tobnpr - Thanks for your thoughts and after reading the article presented, I feel like the issue would be resolved if I try the products mentioned there.
The article, in fact was very enlightening and after researching the recommended products (Bore Tech Eliminator for copper fouling and Slip2000 for Carbon) the thing I come back to in my cleaning process was one particular patch.
It was after I had soaked the spot with Hoppes #9, the first patch I ran through came out with a greenish tint and my first thought was that it was from the bore brush. I now believe that the solvent had started working on a copper/carbon deposit.
So my intent is to purchase those copper and carbon cleaners as well as a 'Proof Positive Bore Jag' and go another round with her. I will post my results.