I own a Savage MLII Smokeless. I hunt with it as much as I do any of my centerfire rifles. It is a very accurate 200 yard rifle and cheap to shoot. I clean the barrel probably no more than once a year. I use the same bore cleaner that I use for any centerfire rifle along with a bronze brush to scrub out any plastic residue left from the sabots. They recommend removing and cleaning the breach plug every 100 shots (box of primers), and replacing the vent liner at that time as well. If using blackpowder, pyrodex, or blackhorn, you would have to clean same day as you would do any other muzzleloader. Last I looked I think smokeless with sabots and optics were legal for TX, OK, KS, LA, but not for CO, WY, and NM.