hanshi
Cannon
"Seasoning a barrel" is a myth that refuses to die; this includes iron barrels. Don't believe it? Then burn some black powder in a skillet over a few weeks, don't wash it and see iffin it is "seasoned". Also, even if you could "season" a bore all you would be doing is reducing the bore diameter and filling in the rifling grooves. Keep that bore clean down to the bright metal.