H.E. Leman rifles. Thousands of them, from late flintlock to early cartridge times. Many half stocks. Some in our library or otherwise posted. Lon Lon, could you reference for me a Leman rifle, originally made as a halfstock that was originally flintlock?
Little Joe, irregardless of the historical precedence of some New England rifles and the 1803 Harper's Ferry, the question is do you really want a halfstock flintlock gun? Unless you do, building two of them because you have some short pieces of maple on hand seems like a lot of work just to use some materials up. You could trade your maple to someone who doesn't mind building percussion rifles for a long piece of wood and build a rifle that you didn't have to search out historical precedents for. More plainly, life is too short (at the Age most of us are at to build things other that what really excites us.