It's a shame that Outers no longer makes the foul-out setup. It is the cats meow for getting either lead or copper out of a bore. Set it up and walk away.
Can try some bronze wool wrapped around a brush. Or some strands of all copper pot scrubber (Chore boy). They are more aggressive but bore safe.
22_Match
Can try some bronze wool wrapped around a brush. Or some strands of all copper pot scrubber (Chore boy). They are more aggressive but bore safe.
22_Match