Sorry about that the old saying goes that the scope should cost 2 X The Cost of The Gun. I am running a Steiner Military Grade 3-12 x 50 so it almost cost as much as the AR-10 Super SASS it's on. I'd run the G2B-Mil-dot and go with a mil.knob that way you don't have to do the math in your head for hold over such as the conversion formula. The mil dot ret will match the adjustment or vice versa. These are good scopes for the money until you start hitting Night Force and Steiner ect. I don't know how short of a distance or long you will be shooting. The 34mm scope is going to add a little bit of weight and that 3-15 will get you what you need. Remember when it comes to scopes, buy once cry once. If you have questions about how much of the Steiner influence went into Burris give them a call those guys a call, they will will talk to you. The reps are very knowledgeable about their product and can answer your questions. If you wonder what a 34 mm tube looks like on a .308 I'll be glad to show you a pic.
BLKSHEEP posted this in another thread, this is the exact model I have and love it. I also bought this through Ero-Optic http://www.eurooptic.com/steiner-3x-12x-50mm-g2-mil-dot-rifle-scope.aspx