I am haveing trouble geting all the copper fouling out of my barrel
I have been useing brichwoodcasey bore cleaner and if I let it soak for about 20 min the patches come out blue
any tips would help
Sure - Just use a more aggressive copper remover. Sweets 7.62, Barnes CR-10 and Wipe Out foam all work very good. JB compound is also very effective when liquid cleaners fail to get out the tough stuff.
Like every other product - Follow the directions which vary WIDELY from one poroduct to another.