While shooting at a moving target, maintaining lead as you swing with the target is called:

Maintaining lead as you swing with the target when shooting at a moving object is essential for accurately hitting the target. This technique is known as "sustaining lead." It involves tracking the target's movement and ensuring that your firearm's sights are aligned ahead of the target's position as it moves across your field of vision. By doing this, you compensate for the time it takes for the bullet to reach the target, allowing for a more accurate shot.

Snap-shooting refers to a quick shot without taking much time to aim, which does not directly involve managing lead with a moving target. Swing-through is a technique where the shooter moves the gun across the path of the target, leading the shot, but it does not emphasize maintaining that lead throughout the shot. Sight alignment focuses on how you align your sights, but it does not address the dynamics of moving targets. Thus, sustaining lead is the most accurate description of the technique needed for successfully hitting a moving target.