may i ask why you decided to go with what looks like a dovetail rail instead of a picatinny? Considering that speedballers have no use for an optic (granted, neither do the woodsballers in reality), the only people who would want a rail at all are woodsballers. Woodsballers that use optics have amost unanimously switched from dovetail to picatinny thanks to the "milsim" craze. I understand that this is not a milsim marker, however, taking the time to mill a rail that will never get used seems wasteful.
Please disregard if I'm seeing things wrong and you've used a weaver rail there... or if you just feel like disregarding me. (that's ok too)
Just a thought.
Excellent design though. I'm glad to see someone else go back to the seperate breech idea.