RE: Seasoning a barrel ??
My grandpa used Bore Butter in his muzzleloader. It was not used for 30+ years when he stopped using it. When he gave it to me accuracy suffered. Bore butter will build up and accuracy will go to crap. One day I sat down and scrubbed that barrel really really good. Next time I went out to shoot I had good groups. If I were you I would not use bore butter.