driftrider i agree with everything you said. I have also read that the 6.8SPC outperforms the 5.56mm and the 7.62X39mm and holds a trajectory almost identical to the .308 out to 600yrds.

I as well wonder why they didn't choose the 7.62X39mm over the weak 5.56. Well i actually do know the answer but i still think they should have gone with the 7.62X39mm and maybe just loaded it with a lighter bullet.