Dr. Tim,
I went back to look at the Gamecock this morning, and you are getting pretty close. You could maybe go a little thinner on lock panels than current or even a little more than he did, unless you are going to inlay (or carve...) around the lock, but if you make it like the idealized PA rifle that is in vogue today, it will just look like everything else, which doesn't seem to be your aim on this project! It is interesting, that I've always liked the Gamecock, but never paid much attention to the lock panels (how could I miss them esp. with those brass inlays? There's a lot going on with that rifle!), which you obviously did!