Honestly, I think I'd take a 5.56 over a 7.62 in the house. It's smaller and has less recoil and allows for faster follow up shots. But, more to the point, a softcore 5.56 green tip penetrates roughly the same number of walls as a .22 Rimfire does. That's to say, they'll all go through a wall, but the 5.56 soft point does so for only a wall or so and then it breaks into fragments which are less likely to continue going and harm a person. I also think the damage done by a tumbling, fragmenting 5.56 is going to be fairly great. Also, 7.62 probably has too much recoil for me to comfortably hold in a "pistol" (which would be my choice rather than SBR)
Not to say a 7.62 won't stop a man. These are just my personal considerations on the matter and what I feel would work best for me. That may even change over time.
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