I've been messing with a 700 ADL in .308; not really impressed, yet, with its 1-1/2" to 2" groups. I've tried various 150-grain handloads and Remington 150-grain Core-Lokt. That shoots a bit better than Argentine Military...That was with a Swift 4X12.
Tried some Federal 165-grain Deep-Shok; it shoots into 1-1/2" with a Weaver V3, so I guess that's about as good as I'll get. A smidgen tighter than the Core-Lokt.
Try some Federal High Energy 165-grain. They claim some 200 feet/sec more muzzle velocity than any other ammo. Haven't found any in .308, but the '06 box claims a muzzle velocity of 3,000 with a 165-grain bullet.