I want to stay under $500 and a max of 500yds. Furthest I can practice is 300yds so 500 might be pushing it. It has been 12 years since I last thought about rifle hunting, so to start I'll limit myself to 350 but would like to extend that without having to make a change.
Matt, you have any knowledge of this model Sako? I haven't seen anything neg other then die-hard sako guys saying Beretta is ruining Sako and that spare mags are $$. I like the 5 shot 1" guarantee and it feels like a high quality item and fit and finish looked better then both savage and tika.
I haven't shot that Sako, but Tikka's are nice, and the Sako should be better as far as fit and finish goes.
Out to 500, any basic BDC reticle will work well. Vortex' Dead Hold BDC is my favorite traditional BDC (uneven drop hashes that match up to aspproximate ranges), as it is easy to get your exact drops with the even 1/2 moa subtensions. the Meopta Meopro scope I have has their BDC, and it is one of the generic BDC styles, so it would take a little more work, but once you had it figured out it would do also. My favorite ballistic reticle overall is Swaro's BRH (not really a BDC, but more of a general "christmas tree" reticle), but it isn't available in your price range.
I think a Vortex Viper HS 2.5-10X44 w/ Dead Hold BDC or a Meopta Meopro 3-9X40 w/ BDC would be the best choices for you. Both are subtended at max magnification. The Meopro is better optically, as it is on par with the Swaro Z3 series, while the Vortex offers their awesome warranty and better dials. Both have constant eye relief, which is really nice for a consistent cheek weld.
Dave's recommendation on the Rapid Z conquest is a good one. The optical performance of that scope line is similar to the Meopro. I had a rapid Z600 3-9X40, and I made a few "extended" kills with it, but I like reticles subtended at max magnification better than finding the "tuned" magnification of the Rapid Z in the field.
As far as ammo goes, I would try a few different loads to find the one your rifle shoots the best. To add to Dave's recommendations, also look at Barnes Vort-X. Barnes bullets are great performers, in my experience.