Hat creek makes a good point (low light practice) and so does Guru (avoid artificial spots), but one more thing to add to the hunting practice scheme...your stance. Most of us probably practice comfortably, standing up and well-balanced. But unfortunately hunting shots aren't always that accomodating (at least mine aren't). Practicing on one knee, both knees, sitting, from heights, etc. AND in dim light helps mimic actual shooting conditions. And oh yeah, if you use popup blinds, say for nice big Tom turkeys, and tend to overshoot the bird on a chip-shot at say 14 yards, then don't forget THAT sort of practice, too. Grrrrrr!