switchback hunter
I am one of those relics that used bore butter for years in my sidehammers and inlines... I really never had any problems with the stuff at all. it really worked well for me and it DID reduce fouling.
I think the original intent of bore-butter was to be used with real black powder as BP residue and combined with oil will produce tar... so the use of all-natural lubricants became the preferred method of lubrication.
I also belive that is one of the reasons that I do not suffer the "crud ring" problem that others do using other lubricants in their bores. I also used and still do use in my trap gun chokes to reduce the plastic fouling occuring their.
The really important thing is how you apply it -
With all of that said - I do not use BB any longer I have found a very good alternative, a synthetic oil product which I have been using for a couple of years now, Slip 2000 and it gives me all the benefits of BB + the protection of a quality gun oil.
Look at the pictures that
Frontier Gander has posted showing the condition of the New Englander barrel he just purchased. If you do not take care of a ML barrel it does not take long to start down the rust road.