I have always used bore butter on my breech plug after cleaning and
before putting it away for the season and never a problem. I just tighten it finger tight when I put it away also.
That being said, if you put it away for an extended period of time without cleaning it after use I don’t know that anything can stop the corrosive power of black powder.
The only thing I’d use bore butter for is as a lube for a patched round ball.
Sabots need zero lubricant and bore butter in any area where ignition is happening will make a mess sooner or later. The tape is a better alternative. The tape also does the same thing the anti-sieze is designed to do.
As for the cleaning, Sticker is dead on. If one is using black powder, Pyrodex, Tripe 7, powder or pellet or any of the other pellet products, you’re using extremely corrosive products and cleaning is not something to put off for a day. Using any of the above products, if a shot is make at a deer one day, that gun needs to get the full cleaning that night. Not the next day or the next as corrosion will have already gotten started. The Blackhorn 209 powder is much more forgiving in that a guy can wait for a week without seeing any ill effects but not much longer.
I think I’ve shot every sub powder or pellet available and can’t say that I will ever go back to them after using the Blackhorn powder. The blue pellets and white hots are nothing more than T7….the chemical make-up of each is very close to identical and they’re all going to make a crud ring if using primer ignition. They’ll all create the crud ring using the #11 caps and musket caps, but it takes a couple more shots to develop.
Tindall, that muzzy of yours is Blackhorn 209 capable and I’d really suggest you try it in lieu of these other subs. I think you’d like it. I’ll also offer that since we’re discussing the breech plug, you find a breech plug cleaning tool set and use it at each cleaning. Primers will carbon the flame channel and flame hole up especially with the subs as well as the blackhorn. There’s more to cleaning than you may think and if ignored can create hang-fires or dud shots, both of which can be dangerous.