Although you will hear some folks say that you can clean some of new "sealed" breech in-lines by simply running patches through them, I still do the old fashioned hot soapy water thing when a thorough cleaning is needed. I tried just pushing patches through both my Omega and new Gensis; and was still able to find small areas of sooty residuearound the breecharea with a Q-tip. For the hooked breech Hawken type rifles, the bucket of hot soapy water is pretty much a given among those I know who use them. And it really isn't that big of an inconvenience either. Maybe 15 minutes. The use of very hot water and high pressure air helps.