After spending all of the last day of PA rifle season in my treestand I finally see some movement. It materializes into a deer. I check out the headgear and get ready for a shot. I follow it in my scope for about 10 minutes. When it finally steps into an opening - BOOM. 50 yards, broadside and with a perfect rest. How could I have missed? I was shooting 1" 100 yard groups with the same rifle from the bench. I finally figured it out. After I finally got the deer's chest in the crosshairs, I decided to be the spectator instead of the participant. Instead of squeezing the trigger while I looked through the scope, I put the crosshairs on the deer's chest and yanked the trigger while I looked over the scope. I was so anxious that I wanted to watch the deer go down instead of following through with the shot. A rookie mistake to be sure. Sorry Dr. Alt, one more doe that will live through the year.