>>64154472
>how successful would it be
>5.8 is theoretically better than both 5.56 & 5.45, so wouldn't that give it a leg up?

It would be shit if using domestic chinese spec manufacturing. Otherwise it is reaching the point where something slightly more American would be better anyways. 6.5 would be a better choice.

I doubt it would be popular, 556 is only popular because it is used by the government and militaries worldwide. It is optimized for human targets, shit like hogs are also prime targets. 556 is otherwise too anemic for humane hunting, and I doubt 5.8 would be all that much better.