Right, they must have been using it for something--or seriously stockpiling it. (Pun intended, I guess.)
But even what we knew before--that in 1762 the shop possessed 316 gunstock blanks; in 1763, 283 gunstock blanks; in 1764, 233 gunstock blanks; in 1765, 193 gunstock blanks; and in 1766, 173 gunstock blanks--indicates a lot of wood on hand!
Though, to repeat, it is hard to make those numbers speak to production or usage levels. While the difference of twenty gunstock blanks between the 1764 and the 1765 inventory might have resulted from the consumption of twenty gunstock blanks, the shop was probably producing additional gunstock blanks in these years. If it produced fifty additional blanks, for instance, the difference of twenty blanks from 1764 and 1765 would have resulted from the consumption of seventy gunstock blanks. Indeed, in May 1767, the shop possessed 240 gunstock blanks, which shows that in the six months since Albrecht had departed Oerter had produced at least sixty-seven gunstock blanks.
Scott