The disparity in projectile mass between 55 and 62 grain bullets significantly affects their ballistic performance. This weight variation influences muzzle velocity, trajectory, and terminal energy. For example, a lighter 55-grain bullet typically achieves a higher muzzle velocity, resulting in a flatter trajectory, while a heavier 62-grain bullet, though slower, often retains more energy downrange.
Understanding this weight difference is crucial for accurate shooting and achieving desired results. Historically, the military and law enforcement have extensively researched and utilized both bullet weights for different applications. The choice between them often depends on factors like engagement range, target type, and desired terminal effects. This difference can be critical in applications ranging from competitive shooting to hunting and self-defense.