If it wasn't built that way, I can't imagine someone springing for the cost of sleeving such a low priced gun as a Folsom Batavia Leader. It is assumed that the H & D Folsom Arms Co. Bakers were built at their Crescent Fire Arms Co. plant in Norwich, Conn. At the same time nearby in Norwich, Davis - Warner Arms Corp. was making their Davis doubles with mono-bloc barrels --
C835 01 PREMIER 16-gauge 28-inch.jpg
Wonder if there may have been some cross-pollination?