I wouldn't use Milspec ball 55 or 62gr ammo for 5.56/.223 HD. Why leave wounding potential on the table when you could shoot JSP, tipped HP or JHP (Designed to open, not JHP target ammo)? As for expecting Milspec ammo to "Tumble" and break into two or more segments, (Which is actually to yaw or rotate off centerline axis and hopefully fracture at the cannelure or midsection), meh, it's a hope and a wish, both of which suck. There's no promises with close range, high velocity FMJ wounds. Torso wounds may offer enough distance to make dramatic upset and tissue damage likely but like the above post describes, extremity wounds not involving bone or large vessels can be like "Icepick" wounds.
Speer GD 55gr JSP, Hornady TAP and many other duty type ammo versions are going to optimize the wounding potential.
As far as pistol vs. carbine for any kind of defense, if there's space and arms to use a carbine, I'd be all over it. Two handed aiming of a longer & more stable object, tremendous muzzle blast of a short barreled AR, ammo/ velocity capable of much more than any common handgun cartridge, 31 reliable rounds, chance to put multiple rounds into an assailant rapidly, etc., that's all good stuff.
Speer GD 55gr JSP, Hornady TAP and many other duty type ammo versions are going to optimize the wounding potential.
As far as pistol vs. carbine for any kind of defense, if there's space and arms to use a carbine, I'd be all over it. Two handed aiming of a longer & more stable object, tremendous muzzle blast of a short barreled AR, ammo/ velocity capable of much more than any common handgun cartridge, 31 reliable rounds, chance to put multiple rounds into an assailant rapidly, etc., that's all good stuff.
