A .308 caliber rifle sighted-in at 50 yards exhibits a specific projectile path characterized by a near-zero deviation from the line of sight at that distance. This means the bullet will cross the line of sight both ascending and descending, resulting in impacts close to point of aim at both 50 yards and a further distance, often around 200 yards depending on specific ammunition and firearm characteristics. This second zero crossing simplifies aiming at shorter and mid-range targets, making it a popular choice for hunting and certain shooting disciplines.
This sighting-in method provides practicality and versatility for the average shooter. It balances the need for accuracy at closer ranges while still allowing effective engagement of targets at moderate distances, mitigating the effects of bullet drop. Historically, various zeroing distances have been employed by hunters and military personnel depending on typical engagement ranges and the ballistic characteristics of available ammunition. The development of ballistic calculators and wider dissemination of ballistic data has allowed for more precise zeroing based on individual needs.