Whats more performance efficient (spawning)?

What will be more efficient way to spawn projectile actor for shotgun pellet effect.

  1. Spawn multiple pellets using loop,with blocking collision to generate OnHit effects on target.

  2. Creating an actor with multiple collision spheres,set them to overlap,set up separate overlap logic for each, and on overlap begin do some logic to overlaped actor, disabling collision and visibility for each sphere and then spawning some particle effect collision sphere world location location.