An instructor heard from a reader bored with practice who thought a shot timer would help them improve.
Training involves being taught and coached on what to practice, unlike solo practice that develops those skills. People usually stick to drills they already do well, so instructors push uncomfortable tasks that drive growth the way heavier weights do after a light bench press.
Shooters should check whether they follow training or just stay comfortable. Those serious about using a handgun in a life-threatening fight can add an old T-shirt to cardboard silhouettes, creating a more realistic target without scoring rings, since bullets need to hit high in the chest to stop an attacker.