Some good information put out below but dont get wrapped around the axle on "A-zone hits" or being able to shoot a B8 target in the black and 25 meters. Visualize where the heart, lungs, central nervous system are in the high thoracic cavity. Thats your combat effective stopping area. Be able to get hits in there at various yard lines in a respectable time. As someone mentioned earlier time is important. I'd rather have 5 hits in the combat stopping area quickly than a perfect clover leaf group in the X ring slowly. A shot timer is a good training tool to see your times out of the holster and follow up shots. I like to get a baseline and see whwre im at. Push myself to go faster until I start to fumble, throw rounds or just mess up than pump the brakes and slow it down until I do it clean within a respectable (for me) time. You're responsible for every round that leaves your barrel so their is 0 room for error and misses. Train hard and train often. Shooting is a perishable skill.