I had been making a series of cold bore shots over a week and the time before the last I noticed that my barrel was getting very ugly looking. The rifle I am talking about is my Eddystone U.S. Model of 1917. When I would shoot it before I would shoot maybe 3 to 10 shots then clean it until the barrel looked like a mirror. I very rarely shot a whole box of cartridges at one time. Then I would clean it until there was not a speck of dirt in it. I am sure there was some copper in there, but I would at least get it to look like a mirror. Then I started about a week ago with one cold bore shot a day, cleaning it just after each shot. I cleaned it just as I always did, to a mirror finish without a visible speck of dirt. But the time before last I was cleaning it as usual, and noticed it was not getting clean, it was actually getting worse looking the more I cleaned it. So when I finally got it so no more dirt came out, the barrel was ugly looking; I mean I have never seen a barrel like it before. Here are some pictures that I took a few hours ago. It looks pitted in some spots and melted in others. 4 days ago it was a mirror! This is my 30-30 barrel. There is a little bit of copper in there but that is about what the 30-06 barrel looked like just 4 days ago. The only thing I have done different is using a graphite arrow as a rod to clean it since my wooden dowel of 30 years broke. I have used the graphite arrow on both 30 cals about evenly. I have been using the same bullets, powder and primers in both rifles. Surprisingly, the accuracy seems the same, I was hitting just as good, (actually better,) and the barrel looked just like the pictures. What is going on with that barrel?