So, to compensate, the bore of the gun is tipped to point the muzzle up slightly in relationship to the line of sight. Because of the tilted bore, will cross the line of sight at a point near the muzzle (around 25 yards away, with most rifles). Then the bullet continues to travel above the line of sight until it reaches the apex of its path. Then the path of the bullet will move continuously down and closer to the line of sight, until it crosses again at the point where the gun’s sights are zeroed for the point of impact. After that point, the bullet is always traveling below the line of sight, dropping steadily until it impacts an object, or the ground.