I just use a water bottle with the squirt cap. Pull the bolt. Point the barrel at the ground. Turn the water bottle, insert it into the breach area. Squirt some water in. Wait a couple of seconds and repeat. Then I run a water soaked patch down the barrel. Then give it a few minutes to dry out some. Run dry patches till they come out dry. Follow with a lightly oiled patch. Then finish with running a dry patch to remove the excess oil. Wipe the bolt with some oil, and remove the excess. Reassemble then call it done.
Total time is about 10 minutes. If I am brushing to remove copper fouling then add another 15 to 30 minutes.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.