[abisel]

For my pistols, revolvers and competition AR, I use BrakeKleen sprayed down the bore from the breach end to blow out all the loose powder residue. Then I would blow dry it with the air compressor.

I use Kroil to remove stubborn powder residue and to loosen the copper/lead fouling. That stuff is amazing as a bore cleaner. Use brass bore brushes and try to very carefull at the crown of the muzzle. If you nick the crown, it will throw off the accuracey. Ask me how I know.

Several strokes of Kroil and let it sit 5 or 10 minutes. Followed up with a pointed jag and a bunch of dry patches until the patches are clean.

For really fouled barrels, I use Sweet's 7.62. An ammonia based solvent that turns the copper green. Several soaked bore brushes down the bore and several strokes up and down the bore followed by letting it sit 5 minutes. Then I use a worn out bore brush with a patch wrapped around it. I would shove it down the bore, remove the patch and pull the rod back out. Wrap a clean patch around the brush and down the bore again. I would repeat until the patch is clean.