Ok Spence10, I'll throw one out.
Thanks, Col Batguano. I only have one rifle with a patent breech, and I make a point of running a pipe cleaner through it at the end of every cleaning. I use paste style lubes, not oils, generally, so oil accumulating in the breech is a non-problem. I have to say, anyone using so much oil that puddles collect in the breech doesn't need brake pad cleaner, he needs to stop making puddles.
Powder clinging to oil on the bore seems a pretty unlikely reason to need brake pad cleaner, to me. Surely any wads or patch used in the load would scrape the bore clean of any stuck grains.
Part of my confusion about the need to start every shoot with bare metal, not a trace of oil, is that for the majority of us shooting patched round ball the last thing we do in the loading sequence is run a greasy patch down the bore, wiping the grease on it all the way down. How does that work? Is the next fad cleaning thing going to be to flush the bore with brake pad cleaner, acetone, benzene or some such extreme solvent after the ball is rammed home? I for one won't be surprised to hear that recommenced. I know there are already some guys who run a jag and patch down after loading to wipe away that ultra-thin film of lube in case it does....what, exactly?
It seems to me that a lot of shooters make this a much too complicated game. You shouldn't have to have a degree in chemistry to shoot a ML, or a hazard suit with gloves and goggles to load your gun. It's really much, much more simple than a lot of guys would have you believe. An example... in 2012 I killed the one and only buck I have shot with my .40 caliber flintlock. That gun gets very little use, these days. I make no special effort at cleaning and lubing it when I put it away, and it goes for years without being shot. I took it off the wall, loaded it in the usual way with no special attention to the bore. I shot this buck....
....and in the report I posted to the forum I said, "Instant ignition, and I don't think I've shot that rifle for five years." That was true, I had not shot it for that long, I didn't feel the need to shoot it before the hunt to prove it would fire, I knew it would.
As Jaron Lanier said, "The arts and humanities (and lets not forget the religions!) have been perpetually faced with the challenge of making simple things complicated." I'm sure he would have included muzzleloader shooting in that if he had known it was a thing.
Sorry to go on and on. Finis.
Spence