ozark57 said:"...a tooth pick in the vent on my flinters so they hold water and fill the bore with water.let it set for 5 min. ,pour out, fill half way , put thumb over muzzel shake and pour out. No need for brush..."
You may not use a bore butter type lube but others might and I think its worth mentioning that bore butter lubes can build up if a bore is only cleaned with normal temperature water.
Somebody posted years ago the analogy of bore butter residue to sticky egg residue on a breakfast plate:
Hold the plate under a cold water faucet and nothing happens...but hold it under the hot water faucet and the sticky egg residue melts and slides right off the plate.
So it might be worth considering for anyone who uses a bore butter lube and does not use hot soapy water to clean, then a good bronze bore brush might make a lot of sense as part of the cleaning regimen...a couple dozen brush strokes only takes maybe 30 seconds.