Gas guns make sense... the gas tubes/ports can be sensitive to cleaners and clogging etc.Gas guns and LE dept's scuttle butt . Seems Hoppe's has a warning about it?
About 1/2 full can, it’s the last I have.With bolt guns I just lean a rifle in the corner muzzle down on a towel, stuff the tube from the foaming bore cleaner can into the lands, and shoot it down the barrel and let it fill most of the chamber (but not more such that it gets into the action). That helps loosen up any possible carbon ring too. It's a shame gunslick doesn't make it anymore.
. It's a shame gunslick doesn't make it anymore.