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Most of the HP .223 you come across are "match" and not designed for expansion like HP pistol bullets - they are HP for accuracy purposes.
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That's true of the heavier weights (particularly the 77gr loads), but is not true of the lighter JHP's designed for varmint hunting. 40- and 55-grain .223 JHP's expand and fragment extremely well (some say the 40-grainers fragment too well, and don't penetrate enough, ~6" or so). My own favorite .223 HD load is Federal 55gr JHP, which is still on the shallow end of the penetration scale.
Any light .223 JHP will generally penetrate less in building materials
and gelatin than most handgun JHP, including 9mm.