My primary is my Remington with #4. My wife's primary is an M-1 carbine. I have argued in here with people over whether or not conventional assualt rifle rounds (5.56 and 7.62x39) are appropriate for home defense. I THINK, that they are rounds designed to penetrate AND over-penetrate, and if all you do is switch to a hollow-point and hope for the best, that's not what I would trust to NOT go through walls and kill my kids. (Don't bother refuting, I've been round and round with this in another thread.) The .30 carbine round is like a .357-lite. Hot velocity from the longer barrel, velocity is significant but not hyper, and bullet weight is also significant. BUT, I'll admit, if I hadn't inherited the rifle from my grandfather, I never would have gotten around to buying one.
I had to rethink this yesterday. My next-door neighbor just threw out her husband, and he deserved it. 6'5", 225, alcoholic, attempted suicide, former marine, (significant only because I have no doubt he knows how to kill,) documented propensity for intense domestic violence. He went to live with a meth addict. They have a four year old child together, which he has already attempted to take illegal custody of. She has a restraining order out against him, which he has repeatedly violated. The police are in the process of picking him up, but for the last two days, I had to think 'outside the house', as it were. Our houses sit side-by-side, with carports next to each other, no windows in either carport. She is not emotionally capable of killing him herself, so I'm not going to give her a shotgun and tell her to do the best she can. If she knocks on my door in the middle of the night, I have to think about keeping him from ENTERING the house in the first place. I don't want to grapple in the doorway with someone significantly larger than me with a long gun. In the dark. So, I took out my 1911, which I normally leave in the car, and maxed out the motion sensors.
I told the Sheriff I'm getting tired of living with a known threat next door. (This has been going on for a couple of years.) I have made sure he has seen me moving my shotgun out of the car, I've sat in the carport cleaning all my guns, when I knew he would see me. He's NEVER started a conversation, which is how I like it. In one way, it's an advantage. I don't have to guess what his intentions and limitations are. I already know.