I'm finally getting the Savage I bought I while ago together for a cow elk hunt this December in WY. It's a Savage 11 in .300 WSM and BP is putting a new stock on it, bedding it and getting that part of it ready. I'm now looking at replacing the factory glass on it. For my price range ($500ish) I am looking at the Leupold VX-2 with the custom dial system in 4-12x, and am wondering if it's worth the $50 difference between the 40mm lens and the 50mm lens. I have read on a few other forums that people have mounted both, but the 50mm will require higher rings. Also, what rings are you guys using for magnum rifles? This is the first hunting rifle build up for me and while I have a budget I have to follow I do want at least some quality to the parts, sono Barska scopes, but I'm not able to buy Swarovski either. I figure a 4-12x will get me in the range I would be comfortable taking a shot in.