Don, I do a fair amount of ROAs for CAS and I pack them with Mobil1 grease. In fact, I do that with Colt pattern open tops, Remington platforms as well. The reason for this is, fouling and debris can't get into a space that's already occupied. So, this is what I would recommend. Now, your cleaning chores are the barrel, cylinder, swab out the hammer slot with your favorite Ballistol and wipe the frame down. I tell the competition crowd to check the frame once a year and if it looks satisfactory, close it back up and check it next year. If it makes you feel better, scoop out what you can with a Q-tip and re-pack with new, still no cleaning .
Mike