i shoot them alot, good led bullet nice and hard led. they will led your barrel a little. the best way to get it out is to buy some copper core boy scrub pads from safe way or where ever, cut it into small enough pieces to wrap around a old barrel brush, i use a old 38 brush for my 45 and then run that chore boy covered brush down the barrel dry. yes dry the steel in your barrel is harder than the copper it wont scratch it. i do this until i see most of the lead out and then clean as usual, if theres lead still in the barrel i take the chore boy to it again