rem...Inlines and sidelocks have different rifling depths, in fact in a custom made round ball barrel the rifling is .012-.015 deep and the barrel has less carbon than factory made steel barrels...So if you can "season" a barrel, you could do so in a custom gun....The original ad that TC came out with had a Renegade that had been shot 1000 times without cleaning the crud out of a barrel, that's really no big trick if you use the proper patch/ball combo...In this ad, the were using BB to lube the patch for a round ball...I don't ever remember them pushing using this stuff to use as a rust preventative during storage, the curret TC webpage doesn't mention this, it does mention using on the outside of the barrel...

I have 2 custom flintlocks, and have shot them since the mid 70s...Frankly I think the "seasoning" is pure marketing...I have used various methods and types lube and cleaning products through the years and now, I just use rubbing alcohol with a squirt of Murphy's Oil Soap for cleaning and a home made lube for patches, I just switched to the home made lube and I used SnoSeal or BB for years...

I had also called both TC and Knight several years ago as I help several locals with their inlines, both said do not use in an inline as the rifling is more shallow than in a sidelock and with sabots you do not need lube....

Guess that's why I don't use...