These “how far can a bow kill” threads always get me. I thought that archery hunting was about getting close. It’s not a distance game. I have yet to see a “precision” crossbow. You’re not an English longbowman shooting across the fields of Agincourt. More than likely you’re a suburbanite shooting at a deer, from a (hopefully) pre-scouted position. Any crossbow will kill a deer at any range that you are able to connect with it at. At what range you can effectively and ethically do that is for you to figure out.