I was at the range earlier today and bought some Semi-wadcutter (which I have never used before) reloads from them to shoot out of my .357 GP100. I came in this evening to clean the revolver up with some Hoppe's #9 which I have used in the past. And to my suprise and ANGER the bluing is gone off the front of the cylinder and the forcing cone. Did the lead eat away at it or what? The gun sat for about 8 hrs before I cleaned it, which I have done before. Now I am wondering if the lead ate away at it in that time frame. Please help here guys...