Jason,
Welcome to the board.
You have to be a member of that other board to view the photos. So, here they are, most of them:



According to Schwing they produced this gun in 10ga, 12ga, & 16ga with 28", 30" & 32" barrels.
It apparently has a rather high collector value for a single shot. In very good condition, about $1,000. It may be worth redoing the barrel.
For people who do this type of work:
Dale Edmonds
Kansas City, MO
(816)444-2040
Keith Kearcher
60232 Ridgeview Dr. East
Bend, OR 97702
541-617-9299
http://members.toast.net/keithkearcher/Michael Allee
http://www.gunsmithingonly.com/Shawnee Mission, KS (KC)
913-238-2743
Dewey Vicknair Ephrata, Pennsylvania
DVicknair@dejazzd.com
717-733-2145
For a discussion about doing this yourself:
http://www.doublegunshop.com/forums/ubbt...660df792#UNREADYour gun is almost a dead ringer for the Remington gun produced on the same Whitmore patent.

Pete