.308 is not designed to be a battle caliber and thus few rifles are "battle". They are great but heavy. Wake up and buy an ar. If you don't want one for some reason, for $1500, buy a stamped ak, some decent furniture, and a case of ammo and roll on.
Edit: .308 is a battle caliber. I just think it may not suit your needs best as a primary battle rifle.
I understand what you mean. However I just don't have much faith in the versatility of the .223 round. Sorry. I love bigger rounds if I need to have one to rule them all. I would rather be able to scale down then not be able to scale up.