So unless I am not understanding some of the mechanics, I think there is a bug with the dummy bullets. Multiple times now I have loaded a marked bullet with a dummy bullet to the right (clockwise) of it and some combination of regular and x2 bullets in the other slots. I will then close and open the cylinder until I see the marked bullet in the top left position so the dummy bullet should be the one in the chamber. I then aim at myself and die when I thought I would live.
Here are a couple of screenshots of generally what the load looks like:
