Tim,
Yes, the Rizer & Weller partnership made all their barrels, heavy swamp at breech and muzzle, remnants of hammer marks below stock line. I don't recall seeing "factory" barrels in the Bardstown School until the mid-to late 1830s, when much of the "swamp" was lost. I believe David Weller did a lot of the blacksmithing [and barrel-making], since his father was a blacksmith, while Jacob Rizer did most of the stocking, at least through the first half of the partnership period. After about 1820 it became a mixed bag, as both men were contributing to all phases of manufacture.
Shelby