Beating buck fever is easy guy's! As Whitetail has said find your mark and look at it only ,Don't look at the deer. Just as your setting yourself on him remember to take 2or 3 deep breath's and remember to relax,before you squeeze the trigger .A lot of hunter's who get buck fever get tense from not continuously breathing cutting the oxygen to the brain which cause tension. I used to get buck fever as well and a couple old boy's told me this ,and I found it work's great for me. This will help you calm yourself ,just look at it as if it's another target . The reason you get buck fever is that you know that this deer has defenses and if you make a mistake it will be gone, and you'll not get another shot. A target doesn't move so your calm knowing this fact .Just look at the deer as another target .Take deep breath's and remember to relax.

And don't look at the antlers

nubo