Picked up an interesting fowler? at the Kingsport, Tenn. gun show yesterday. I don't know much when it comes to front stuffer history, so heres what she looks like. The stock is walnut. The barrel starts oct. and changes to round about 6" from the tang above the stock. In the stock it stays oct. the length of the stock which is 11 1/2" long from the back of the breech plug. There are 2 stamped metal thimbles to retain the ramrod which is steel. There is no rear sight, just a bead up front. The bore apears to be .69 cal., but is rough. I'm not sure if it will be shootable. The barrel is held in place with 1 wedge pin and the tang screw. Now for the interesting part. Removal from the stock found what appeared to be a place for a rear sight on the bottom flat with several lines and numbered markings such as 10,9,8,7,6,and 5. In the bottom of the dovetail is 17.0. The series of above numbers are in an indenture such that a military type elevation would fit into.The oct. to round work is tapered and appears to have been done by hand. The nipple threads seem to be possibly the same as a Thompson Center rifle but a little loose until getting tight. The butt plate, trigger guard, lock, side plate, and all screws appear to be military. The lock has S58 stamped in the middle. So to me this gun seems to have lived a double life. First a Springfield .58 cal. rifle then later converted to a fowler and drilled out to .69 cal. smoothbore. Anyone seen any like this? Was this a common conversion? All comments appreciated.