I recommend either a FAL pattern rifle or a HK-91 pattern rifle.
If I were going into the decision fresh with a totally open mind, I would lean toward the FAL. But I just like the feel of the 91 with the slimline fore-end. Even though it kicks like a mule (problem is fixed with the rubber buttstock) and lacks the stay locked open after first shot feature. I think this was a deliberate design choice for the 91- but I don't know why they chose it. Keep mud out of the action?
On the plus side, 91's I have experienced have been super accurate (considerably more so than the FALS), on par with a decent bolt action rifle.
Also, I approve of your choice of calibers. It's nice to be able to shoot THROUGH telephone poles.
In many cases, .308 turns cover into concealment.
-Kelvin