1822 is accepted date for Sam's removal from Xenia, OH, to St Louis, MO. Thus {1] all his OH guns were flint initially [2] some of his St Louis guns were flint. These 2 things settled, most of hsi OH made guns were fullstock. How many fullstock guns he made in St. Louis will always be unknown, but probably "not many." Better question is whether he consciously decided to make "Hawken rifles" or it just accidentally evolved as buyers said we want plain guns, half-stocked, in large bore over opposite that he had been making in Ohio. I sincerely doubt any of St Louis makers consciously set out to make "Hawken rifles."