Just bought a portable hand held steam cleaner to clean my flintlock rifle after shooting. I witnessed a demonstration how the steam cleaner worked. The rifle was sealed at the touch hole then laid flat on a bench with a slight incline at the butt so the steam and dirty moisture would run out the bore.The Steam cleaner was rigged with a 50 inch plastic surgical tubing attachment that was installed on the steamer's outlet (tubing also had about 4 small holes for steam to escape on each side of the tubing's end). The steam was then forced in the barrel's muzzle as the tubing was drawn in and out of the barrel from breech to muzzle.This was Followed by a few dry patches in the barrel which became too hot to touch without a pot holder. After a few strokes with the tubing and a very short drying time the barrel bore was clean and ready for oiling. Any comments about this method for use on a full stock muzzleloader or even for cleaning a smokeless powder modern revolver would be appreciated.