556 defense loads

Any recommendations for 556 defense loads? I'd prefer to keep it in the 55 to 62 gr area. I probably won't be using my ar inside of my house for self defense and live in a rural area so over penitration is isn't a big concern but barier blindness is a big plus. Feel free to share what yall keep loaded and why even if you dont think it fits what im looking for.

Edit: I'll be using a 20 inch barrel btw