Took a trip to the Missouri history museum today and saw what looked like a Hawken style rifle in a display case. It looked normal in every respect but definitely had a small hinged trap door at the breach. Maybe an inch or so in length. Would any one know if the Hawken brothers or any one else made such a rifle? I don't think it was a cartridge rifle but since I could not get a hands on look I could not be sure.
HH 60
HH 60