If you can keep a 4 in pattern at those yardages, IMO, your doing good. Like Blake said, shout the broad heads you will be hunting with. They always seam to fly just a little different than a field point because they are longer, which will add more front weight to the arrow. Make sure you are using the same grain broad head as your field point. Most of the time you should hit the same spot, but sometimes you have to shot just a hair higher with your broad head than you would with your field point, not always, but sometimes. Thats why you need to practice with them also to make sure they are hitting the same place as field point. Buck fever is a wonderful thing, but can make you shoot shots that you should be waiting on. And like Sniggle said, practice from your stand also.. Then practice, practice, practice..... I'm a lefty also