So much for theory. Read “Blackhawk Down”. The attackers were hit with multiple .223 rounds from the poodle-shooter and kept coming. The guys shot with the .308 went down and stayed down.
And yet, 6 years into a shooting war and countless dead terrorists later, we continue to issue 556mm for individual weapons and light machineguns.
That's one impressive conspiracy, since apparently we've been at war all this time and have failed to notice 556 is ineffective.
I have a Norinco Sporter and know what you are talking about, I can shoot clean through an oak tree of 36” diameter with it and still pack enough punch to penetrate 3/4” plywood using full metal jacket ammo. Surplus russian ammo with soft lead load would only go just past halfway of tree trunk. AK is a good gun for guerilla type combatant but I would prefer an M14 type weapon for profesional military.
But, as I remember, the problem was that the soldiers were using armor-piercing rounds, so the rounds would go right through the Somalis, and not fragment and do internal damage. Although higher-caliber rounds always help. But you’ll have less of them. And it’s true what they say - you can never have too much ammo!