Hows bdc lining up for you RicG?
That would be my question. Say, compared to the Burris FFII ballistic plex. The Burris is great out to 500 yards, as tested on my rifles. From 5-600 is where the Burris isn't going to work, as per your requirements to get you out to 600 yards.
One I've used that would do it, and it's a fairly lightweight scope and tracks very well is the Zeiss V4 4-16x44. The glass wasn't great to my eyes, but other guys argue about that. I'm used to my Nightforce scopes though, and my cheap Burris FFII 3-9x40 with ballistic plex reticles.
For something like a lightweight 7mm-08 hunting rifle, I'd probably lean toward the V4, personally. Especially if you are planning on shooting out to and past 600 yards. They have some nice drop compensating reticles, if you just want to use hold overs.
Others suggesting the SHV, may be on to something too, but as I understand it, the MOAR reticle is not very good on the SHV 3-10, and some guys complain about the eye relief of the 2.5-10. I haven't looked through one, so I can't confirm that though. I know I love my 5-20x56 SHV with the MOAR reticle, but it's too big for a standard hunting rifle.