Hi Guys. I have an old barrel on my P17 25-06. The barrel looks shiny with plenty of rifling to my untrained eye. When I clean it I tend to get a lot of blue (copper fouling) on the patch. After reading that an old barrel that has not been cleaned properly for some time may have layer after layer of copper fouling I decided to see if I can clean it out. I have used Hoppes no9 to remove carbon with patches. Then a few patches of Boretech eliminator solvent and then a wire brush with more boretech solvent on it, scrubbed through the barrel a dozen times Then more clean patches until dry. Then a day later I repeat the process as a patch with solvent pushed through comes out with blue on it again. I have done this about three times now and I just finished a clean a few minutes ago. The patch after the clean with the wire brush and solvent came out really blue again. Do you think this is from the barrel fouling or the copper brush I am using. Do I carry on with this method or am I totally on the wrong track. If I put another patch through now with solvent once, it would be clean with a very light blue tinge to it. If I wire brushed it again I am sure it would come out dark blue. What do you guys reckon?