I found quite a variety looking through Kentucky Rifles and Pistols one time. I think they were going for a more sophisticated standard than "no more than 1/8" around lock" or that type of thing that you hear from time to time. My unscholarly hypothesis is that they prioritized the size of the lock panels in relation to the stock (i.e. flow into wrist and forearm) more than to the lock plate. I got curious one time when I saw a contemporary with uniformly nut-shell thin molding around lock that made both the panels and the lock look too small for the rifle. I also saw that various originals seemed to be quite content with unequal amounts of wood in each "quadrant" around the lock, esp. in cases where you could see the lock was tilted (e.g. to keep mainspring clear from breech), and it seemed to vary on an as needed basis, but usually didn't jump out unless you were looking for such a thing. In a few cases only, however, it was inelegant, enough to make one think they might have carved the stock completely and then stuck the parts in without any regard for further refinement.
Anyway, I'm interested in what feedback you get, as I have no resources beyond my own poor eyesight and bad judgment
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