Still Rick,, we see old musket barrels as I said earlier, found in old sheds and such and the bores are always better. (always seems an OK word in this case!)
I have read how when a torador barrel was made, it went to the Rajah or whoever for inspection.
Then with some instructions on how it was to be finished, it went back to the maker and was stocked up and finished.
It then went back to the Rajah along with I think three balls to try it.
It was fired and inspected by him, went back again , was cleaned and put into the armoury.
So, they Did get cleaned at least once!
I cannot believe these were Not cleaned, as even the wild northern tribesmen relied on them, and were brilliant shots with them., If you expect them to work for you, we all know that a barrel must be kept in good order.
I have only one matchlock barrel that isn't eaten to death, but the rust scale was so hard it was still a real sod to get it clean.
Its from the armoury up in Rajasthan, -Jaipour to be specific.
Its a heavy gun, and likes 5 drams of powder behind a .54 ball.
Still, it is hard to shoot well with it!