Recently got a 1969 vintage Lester Cox made muzzleloader. It’s set up with a false muzzle and bullet starter. It’s set up for cross patch. I put a slug thru the false muzzle and it came out .357. What paper should I use for the patch? Need to obtain a bullet mold so in part that will be determined by paper being used. This is a new rabbit hole for me. Any advice is greatly appreciated.