View attachment 9702
More bullets or more power on target? - Age old argument which i will not go into since i prefer large caliber bullets downrange myself. Same reason why i drilled my whole family on the .45 first and then the down to .38 Spl/9mm to finally the .22 (i know i started them the other way)
Stopping power was not the point i was discussing but accuracy as well as logistics. The accuracy of the round in semi auto weapons or even bolt action ones (think M40A3) was never in doubt since it has many useful applications, even in law enforcement and popular as a tactical sniping round.
Once you get it to full auto though, with the heavier recoil it starts to get dicey in terms of accuracy especially for the longer range engagements and multi-target suppression. It is also more taxing on the soldier who has to battle the additional fatigue from handling/lugging around the weapon and the ammunition.
It is ok for professional or special forces but for an army that is composed mainly of conscripts, it takes much more training and effort to master sufficient accuracy unless one is doing fighting in enclosed or built up areas where accuracy may be slightly compromised.
Of course undeniably, having better penetration through cover (walls) is still sometimes preferred in a military scenario where its different from a police action and when collateral damage is unavoidable.
Unlike an MG which is good for suppression or area denial, most of such assault weapons in this caliber can realistically carry only up to 20 to 25 rounds per mag which means more reloading. "Changing mags" isn't a popular term in the midst of a battlefield and so is indenting ammunition when a country is under seige.