I think your scope is a good choice and I liked the way the 140's worked in my .270. As far as rings are concerned, I prefer the ugly Weaver bases and rings and I'll tell you why: When I go into the rough and remote, I don't take a back up rifle but I do take a back up scope. The back up scope wears Weaver rings and has been mounted and sighted in on the rifle I'm using. If the scope that's on the rifle goes south or gets hurt, a couple of twist on the thumb screws and I've got a replacement on the rifle that is within a slight tweak (if that) of being sighted in.