When i go to clean BH209 fouling from my bore i run normally 3 DRY and tight fitting patches. I push them down the bore and the dry patch grabs all the loose fouling and pushes it out of the way.

After thats been done i take a patch, spray it down with birchwood casey bore scrubber and swab the bore with that, paying attention a great deal to the breech area as well as the muzzle. Let it sit for 10 minutes to loosen up carbon/copper/fouling and then hit the bore with about a dozen strokes with my nylon bore brush. Wet another patch and push that down the bore, flip it over and push it down the bore again, making sure i clean out the QLA area.

After that i basically just run a few dry patches and i am finished.

No oiling afterward as bore scrubber has an anti rust additive in it.