What does it mean if a shooter has a tight shot grouping?

Having a tight shot grouping signifies that the shooter is able to consistently place their shots closely together on the target. This is an essential indicator of higher accuracy, as it demonstrates the shooter's ability to control both their aim and their trigger pull. The tighter the group, the less variation there is in shot placement, which suggests that the shooter is proficient in their technique, including stance, grip, breathing, and sight alignment.

The other options do not accurately reflect the implications of a tight grouping. Firing too fast might lead to a wider spread of shots as control diminishes, while the power of the rifle does not inherently dictate accuracy or shot placement. Lastly, improperly calibrated sights could lead to a poor grouping, rather than a tight one. Thus, option B is the most accurate interpretation of what a tight shot grouping conveys about a shooter's performance.