Hint on how to make a chamber/action cleaning tool.
Obtain old aluminum or carbon arrow, size is not important. Cut it off at about 16-18 inches, while leaving the threaded arrow insert in the end of the arrow.
Get a wood/plastic file handle and drill a hole in it just big enough for the end of the arrow to go in where the file goes. Glue arrow in the handle
Depending on size of your chamber, get either a 357 or 45 caliber Kleen Bore or Montana extreme heavy plastic bore brush and put in the end of the tool. Do not use a brass bristle brush.
Use large shotgun cleaning patches. They will stay on the plastic brush, reach every nook and cranny inside the action and chamber and rails etc.
Simple matter to easily take them off, that is why you do not use the brass bristle brushes.
Or you can buy one from several mftrs for about $30 vs under $5 to make yourself.
BH