Some people here have said that in shooting accuracy is the most important factor. In the classes I've taken we've been taught that accuracy is important but you also need speed. The third factor is power which depends in the weapon and ammo you're using. Now, in terms of speed and accuracy when it comes to hitting the target, what I've been taught is you want the shots on your target to be roughly far enough apart so that you can cover them with your hand but not any further. If your shots are further than that you want to slow down and take your time with your shots to improve your accuracy. If your shots are really close together, if they're right on top of each other, than you want to speed up and sacrifice some accuracy in order to shoot faster. All the accuracy in the world won't be that good if your opponent shoots you first.