RE: 40# suggestions?
I think taking him to a ranch is an excellent idea. As long as he has shown the needed skill and techniques, reward him with a hunting trip. You might also consider hunting for hogs. Turkeys have such a small kill zone. Hogs are a little bigger and I believe 40# is enough to kill one. Perhaps someone else knows for sure.
KEEP IT LEGAL. KEEP IT SAFE. OR WE MAY NOT GET TO KEEP IT AT ALL.