We both went to the same place. It's an original 10 gauge by Winchester. I emailed Coyote Cap and he told me that the 1887 Winchester in 10 gauge is not designed to stay in battery on its own. The 1901 added a lever catch to keep things closed, but the 1887, if you want it to stay closed, you just hold the lever. At the moment of firing, however, there is a catch on the bottom of the trigger that engages a notch in the lever to hold the action closed. Yes, I'm somewhat shocked by this, but at least I know I'm not going crazy with my assessment that nothing was broken. Well, looks like I need to start building a mag follower, find a spring, and start working on my 'Rose box shotgun'.