Anybody still loading with frangibles for home defense needs to reconsider what the target is likely to be. Whether it is the local S.W.A.T. or a group of thugs dressed like the local S.W.A.T., the target is probably going to be armored in some fashion. So, shoot first and shoot fast, the odds are that if local S.W.A.T. kicks in your door, you are going to die regardless.
Shotgun flechette rounds will go through kevlar....