My two deer, taken with the recurve when I was a teen, were both within 20 yards. At that distance, the noise of a crossbow would not matter if the shot is aimed correctly. And frankly, I'd never shoot outside that distance with either a bow or a crossbow... it would be unfair to the deer to not ensure a very quick end. It's all about patience, and not being so greedy that I take less than perfect shots. My uncle taught me well.