OverlapSphere Max objects returned 128

In my game I'm setting off a bomb in a large swarm. Physics.OverlapSphere seems to return a maximum of 128 Colliders. That only accounts for a portion of the swarm inside the blast radius. Is there a way to remove that cap?

I think I can work around the issue by checking to see if 128 was returned, moving those 128 to a different layer, then calling OverlapSphere again. But, I'd rather the function just gave me the correct result the first time.

 

Could you possibly instantiate an empty game object with a sphere collider with IsTrigger set to On? And do some manipulation in OnTriggerEnter.