Re: Copper in the 300 RUM
I tried out the JB-Paste last night. I used a 25 cal Bronze brush with a 44 cal patch wrapped around it. I applied very little of the JB-Paste and went to work. Is it normal for the patches to come out COMPLETELY black? I was able to work it down so that after changing the patch a few times and a total of 50 strokes, I could see the metal on the inside of the barrel and I could see some tooling marks. Is this also normal results? Thanks for the info!