Thompson Center T/C Renegade 54 Caliber Smooth Bore I measure the bore at. 530 at the muzzle The bore is stained but not pitted. There are no manufactures marks that I can find on this barrel. The finish is a of poor quality browned type finish. The touch hole is missing and is larger then a standard T/C vent liner. The threads for the Vent Liner is are in good condition. One Ramrod thimble is missing the screw to hold it on. The thimble is included, I just don’t have a screw. 26″ Long 1″ across the flats I removed this from a T/C renegade stock and it fit my personal Renegade stock perfectly. 530 please see pictures with caliper. The item “Thompson Center T/C Renegade Barrel. 530 Caliber FLINTLOCK SMOOTH BORE” is in sale since Monday, February 27, 2017. This item is in the category “Sporting Goods\Hunting\Vintage Hunting\Black Powder”. The seller is “r4kidsllc” and is located in Turner, Maine. This item can be shipped to United States.