Well, I can run you down as I do it.
Place three pound coffee can half full of water on stove burner, medium heat.
Remove nipple - drop in water.
Screw clean-out nipple onto gun. fasten hose & clunk weight if not already.
Cut a 2" x 3" cotton patch and put a tiny slit 1/4" in from one corner. Push threads of jag through slit and then attach jag to ramrod.
When water comes to a boil, scrape in a bit (the size of two aspirins, maybe) of Ivory Soap or a dash of Muphy's Oil Soap.
Set water on newspapers or several thicknesses of paper shopping bags on floor.
Dip tube in the water, hold gun upright by grasping at muzzle with an old towel between your hand and the barrel. Dip the patch in the water and then push it into the barrel slowly as the air bubbles out the tube into the can (too fast and your wife will never allow this in the house again - but she won't anyway bacause of the smell). At the bottom, reverse and slowly draw hot water up into the barrel. Repeat for about 20 passes.
Set down gun and pour out water, collecting nipple. Put more water in can and heat again.
Clean nipple with toothbrush and toothpick, then poke a small paper clip end through it a few times. Hold over flame with toothpick for a few seconds and set aside.
Take new boiling water, new patch and repeat; sloshing fresh water through barrel 20 strokes or so.
Wipe up with towel and allow gun to set for 10 minutes for water to evaoprate.
Run a new patch with Lehigh Valley Lube or the rust preventer of your choice through the barrel. Replace nipple and wipe down all metal on the gun with Lehigh Valley, CLP Breakfree, etc. on clean patch. Wipe wood dry. Clean up surroundings as necessary.