I have a barrel. Looks like a Colt 1911, but appears to be a muzzleloader. Appears to be 45 Cal, as a .440 ball fits loosely. Barrel is marked "CBMLMID-SOUTH CHAMPIONSHIP 1977" ON THE right side and "ED MASON MEMPHIS" on the left. Barrel is 8 inches overall. Muzzzle to bottom of barrel is 6 5/8 inches.