Yep, I agree, that guy's pretty bright! :winking:
I once made a "barn gun" out of a stock that had the grain running right out the top of the wrist. Now, I have seen plenty of German guns where the wood did the same thing, and the stocks were none the worse for wear even after 200-300 years, BUT, I didn't like it, and wanted to reinforce it. I made a rectangular slot in the bottom of the wrist beginning right behind where the triggerguard tenon was and ran it right back to the rear triggerguard mounting point. The slot was about 1/2" wide (about as wide as a triggerplate, one of which could be contrived to cover the reinforcement up entirely), and went to within maybe a quarter of an inch of the top of the wrist...didn't want to cut through and have it show on the top! I made a rectangular piece of wood to fit into this slot (which was not all that easy). Now, to use epoxy, the wood reinforcement should NOT fit all that tightly. Epoxy doesn't soak into the wood at all, and where the two pieces of wood touch, the epoxy is squeezed out, and there is no glue bond, so, you gotta leave a little room here. I slopped in the JB Weld and squeezed 'er in. In theory, the stock is now stronger than it would have been if the grain were straight....
I think it would probably be better if the slot could be milled out very evenly and straight, and the reinforcement made to fit snugly, and wood glue like Titebond 2 or 3 used to fit the reinforcement in. This type of glue holds wood MUCH better than epoxy (despite the claims of epoxy makers). The disadvantage of doing this is that it requires the slot and reinforcement to be precisely made and fitted, and the reinforcement has to be SLIGHTLY too small to allow for the swelling of the wood when the glue is applied.
Now, my gun (the "fire gun"...don't ask) was a barn gun, and I painted it red, so I didn't worry about the rectangular gray outline that I could see on the bottom of the wrist. BUT, since you have this ugly place on top of the wrist, the whole thing can be covered with a period-type metal overlaid wrist wrap.