I clean the powder fouling out first with some solvent and a few strokes of a bronze brush. I leave the bore guide in the chamber end and squirt the wipe out in through the muzzle & let it sit over night. A couple of patches in the morning and it's clean, the bore guide keeps the mess out of the action. That's usually only a once a year deal for most of my rifles. The ones I shoot a lot only get it once every 3-400 rounds.
