I know that perhaps this question has been asked many a times...but here it goes again. I have a $1000 budget to spend on a tactical scope. It will sit on a .308 single shot target rifle with a Shilen bull barrel and a McMillan A4 stock. I will shoot the rifle anywhere from 100 to 1000 yards mostly prone from a bipod. I mostly shoot targets and I do not hunt. I am interested in a scope with good glass, tactical exposed turrets, MOA reticle, larger magnification, and an objective of at least 50 mm. I have done some research and thus far number one on my list is the new Burris XTR 8-40X50. I am asking the guys on the forum for advice with pertinent explanations. Thank you.