I was shown how well Hydrogen peroxide removes leading by an old-time local gunsmith.
I do not think it poses any health risks and it sure works well for me .
I use an earplug to plug one end of the barrel, then I pour hydrogen peroxide in and wait about half an hour. I then use a copper bore brush, I have had big lengths of lead come out of a 45 Colt revolver barrel.
It seems to loosen the bond between the lead and the barrel very well.
Does anyone know if there are any barrel hazards to this method ?
It sure seems to work well.