This sighting-in technique involves adjusting a firearm’s sights so the point of aim and point of impact coincide at 25 yards. This specific distance is used because the trajectory of a bullet typically rises above the line of sight after leaving the muzzle and then descends, crossing the line of sight again further downrange. With this method, the trajectory intersects the line of sight at both 25 yards and approximately 100 yards, providing a practical zero for many common firearm and ammunition combinations. This allows for accurate shots at both closer and moderately longer ranges without significant holdover or hold-under adjustments.
The utility of this approach stems from its practicality and suitability for typical engagement distances. It simplifies aiming by eliminating the need for complex ballistic calculations in the field. This is particularly relevant for hunters and recreational shooters, as it allows for ethical harvests and accurate target shooting at common distances. Historically, this method has been favored due to its simplicity and effectiveness prior to the widespread availability of sophisticated rangefinders and ballistic calculators. It remains a useful technique, offering a balance between accuracy and ease of use.