In target shooting endeavors, “accuracy” has traditionally been viewed on a scale… a shot closer to the center of your target area has been considered “more accurate” than one near the edge. In defensive shooting, accuracy should be seen as a “yes” or “no” proposition: Either the bullet hit your intended target or it did not. If it did not, you can try to determine why, fix the problem and try again. If it did hit the target area, then you have achieved your goal. In defensive shooting, it is much more important to achieve your goal (i.e. hitting your target area) as quickly as possible than it is to obsess over hitting the center of your target area. Of course, defining your target area appropriately is important to the process as well. If you define your target area as an area the size of the center of the typical human chest, you are in the right ballpark for defensive shooting. When you shoot, if you hit that area, you are “accurate”… at that point, improving your skill means getting hits faster, with less effort, not hitting a smaller area.