It depends on what kind of country you are hunting in along if you are using a stand or not. I restrict my shots to 30 yards or less. But then I also will spot and stalk to within that distance or use a ground blind in heavy cover for deer and elk. The shots that I have taken have been anywhere from 5 yards to just over my 30 yard limit.
i try to stay within 40 yards.thats my comfert zone no need to make a bad shot and wound a animal. but then theres gyes who have bow hunted for a long time that can make 40+ yard shots. arrows are hard to find when they go to far and there too expensive to loose.
Really has to be up to you. You are the only one that knows your ability to make a clean kill shot. Practice, practice, practice! Don't be afraid to push your limits while practicing, really helps with accuracy and a better confidence at closer ranges. Starting out I didn't feel comfortable shooting at an animal over 20 yds. Now I feel confident to 40, and won't attempt anything much past that. I can make shots past 40, but too many variables the further out you get.
Bring them in on a string. I love this term, if you want to be successful on calling in Elk, try not to just sound like the other caller. We all laugh at each other when we are practicing Elk calling at home or while camping. When I first started calling in Elk, I had no idea what i was doing and it's funny how many I could call in. The biggest Bull that I have called in to date was actually my first. I was making cow calls and screwing it up big time. But it's obvious I didn't screw up...