Guess I'm too late, but count this as a vote for the Vortex PST FFP in MOA. I have one on my 308 (which is very similar to yours) and couldn't be happier with it.
Glass is very clear and bright, and this puppy tracks like no other I've seen. I shot a box test at 100 yds, moving 4MOA each direction. I have a pic....you can measure the box at exactly 4 inches....a perfect square. I shot it at 500 yds, held off 2 MOA via the reticle marks. Care to guess what it did? Yep, 10" on the mark.
Sure, there may be better scopes out there, but like my rifle, this PST shoots better than I can....at 1/2 the price of others.