Greeting knightone.
Since your query is posted to the "Ammunition" forum of AR15.com, I assume you are referring to an AR15 home defense round. I've been fortunate enough to not ever have had to send any round(s) (pistol, shotgun, AR) down a hall of my home, so I cannot make a recommendation based on personal experience. I would think that there are many posts here at AR15 covering your query; the ammo oracle, for instance, offers some great information about .223 ammunition related to this application (Hornady TAP, etc.).
Personally, given a choice based on some training I did receive in the military and out, I would reach under my bed for my Mossberg 590 9-shot loaded with 2 3/4" Federal low-recoil, 9 pellet 00 buckshot (equipped with the invaluable, IMO, M6 Tactical Illuminator) every time over my Bushmaster Dissipator loaded with many LC 55gr. and even, perhaps, over my Browning Hi-Power with 115 gr. Cor-Bon. Hard to imagine beating the stopping power of nine, appx. 8mm steel balls impacting a well-illuminated/lasered target within a 10" radius (average) at 25 yards (thank you Vang Comp). I look forward to reading other's suggestions.
O'DubhGhaill