This concept refers to a specific sight adjustment for firearms where the projectile’s trajectory intersects the line of sight at both 50 and 100 yards. This setup results in the bullet impacting slightly above the line of sight at ranges between these two distances, and slightly below the line of sight at ranges closer than 50 yards and farther than 100 yards. A rifle sighted in this manner allows for accurate shots on targets within this range bracket without needing to adjust the sights or significantly compensate for bullet drop.
This sighting method is popular for several reasons. It simplifies aiming within a commonly used range, allowing for quick target acquisition and increased accuracy in typical hunting or shooting scenarios. The minimal holdover or holdunder required reduces the potential for error. Historically, this zeroing distance was favored due to the limitations of older sighting systems and the common engagement distances encountered. While modern optics and ballistic calculators offer more precise adjustments, this method remains practical and efficient for many applications.