RE: killing distance
It's good to ask such questions, so you can guage what good shooters do against what you're thinking of doing. The distance is up to you, but like others said, has nothing to do with your bow. At what range do you feel confident that you'll hit what your aiming at and without much risk of just wounding the animal. With longer distances, many other factors come into play like wind, animal movement, unseen twigs, etc. At every distance, there are factors like animal alertness, angle, lighting, fatigue and your nerves. For me, my maximum range varies with every situation. I've taken a couple shots in the 20-25 yard range, but most are in the 8-15 yard range. I'm a fairly good shot and usually score in the top couple spots in my archery leagues. However, when it comes to effectively killing an animal, I find that most opportunities are relatively close.