A distance of 100 yards is commonly used for zeroing firearm sights. This process involves adjusting the sights so that the point of impact aligns with the point of aim at that specific distance. A paper or other suitable material marked with a distinct aiming point facilitates this adjustment.
Establishing a precise zero at this range provides a reliable baseline for accurate shooting at other distances. It allows for predictable bullet trajectory compensation and ensures consistent shot placement. This practice is rooted in the historical development of firearms and ammunition, offering a standardized method for enhancing accuracy and effectiveness. The chosen distance balances practicality with the ability to detect even minor sight adjustments.