Howdy, I've made exactly one crossbow, and I wouldn't quite call it hunt worthy. Mainly I don't like leaving a wooden produce at full draw for prolonged times, something you need to do while hunting. The next one I build will have a commercial steel prod. Look up Alchem crossbow parts. Their site has some good plans, not to mention a good selection of parts for building crossbows. Use their parts or use their drawings as a basis for making your own parts (depending on your metal working skills.)
Ron