Look at the balistics charts for .308 and they will usually include mid-range trajectory in those charts. Use that as a guideline for what suits you best.
I, like you, have little use for shots outside of 100 yards so this has been an interesting thread but I've looked at enough balistics over the years and I would have to agree with the Marine, aka, Mr. Bogan and Sergeant Hazcat...
Navy guns shoot in MILES, close range for a 16" gun throwing a Volkswagon size round takes on a whole new meaning!