I detest cleaning m/l rifles, so 40 yrs. ago , went to hdw. store , equipped laundry sink faucet with a screw on water hose connection, 4' piece of clear plastic tubing , a probe of automobile brake line. The brake line tubing , and the other two elements put together w/ hose clamps . This rifle cleaning frustration buster works like this. Attach hose fitting to sink faucet , insert break fluid tubing into the rifle bore to the breech plug face. Removed the lock for tooth brush cleaning under faucet. Hold rifle muzzle so effluent goes into laundry sink. With one hand , hold , or clamp a cleaning patch over touch hole ,turn on hot water faucet , and wait for barrel to get hot to the touch. Dump cleaning water out , run a couple dry patches down the bore with your favorite lube , cleaning brew , I prefer WD 40. Clean , and lube lock , and reassemble gun. Done , unless furniture wax desired for exterior. A further enhancement to the rifle cleaning frustration buster , is a 48" by 10 " board with a dead man post under one end of the board , and a simple "c" clamp to attach the board to the sink , so the rifle can just lay on the board while being flushed w/ hot water.
This sounds like a lot , but it only has to be done once ,and from then on ,just use it , and store it until next time.
M/L cleaning frustration , busted.