Thread: Copper remover

Hi Guys
Iv got quite a copper buildup when looking at the muss its Farley evenly spread around , tried rem bore brite put 50 odd patches through it yesterday along with a bronze brush but it hasn't done much at all hoppes 9 was no good either so I got my hands on some Gunslick foaming bore cleaner today definatly leaves the patch pretty blue it may have removed some already so iv filled the barrel & taped it up , upsidedown will leave it to soak for the night .
Whats everyone else using , method ?
Cheers