The process of adjusting a .308 rifle’s sights or scope so that the point of impact coincides with the point of aim at a distance of 100 yards is a fundamental marksmanship skill. This precise adjustment ensures accurate shooting at that specific range, and serves as a baseline for calculating adjustments needed for longer distances. A properly adjusted rifle will consistently hit the target center at the specified distance under ideal conditions.
Accurate shooting is paramount for various activities, from hunting and competitive shooting to military and law enforcement applications. A rifle zeroed at 100 yards provides a reliable benchmark for ethical hunting practices, ensuring clean kills and minimizing animal suffering. Its also crucial in competitive target shooting for achieving high scores and in tactical scenarios where precision is vital for safety and mission success. Historically, the 100-yard zero has been a standard due to its practicality in battlefield and hunting scenarios, offering a balance between short and long-range effectiveness. It provides a solid foundation that shooters can use to estimate holdovers or make scope adjustments at other distances.