After a lot of research I use only 2/34 #4 buckshot in Shotgun shells for home defence. I would not recommend .223 or 556 AR 15 near other dwellings as stated before they will go through drywall easily as per ballistic gel testing which is avalible vea google. i chose #4 buck based on ballictics gel tests and use my AR 15 for range practice only
Are you talking about these ballistic gel tests?
And last but not least, the theory of frangible ammo for home defense in slow-mo.
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