NIKON Buckmaster with a BDC Recticle. You still have a limited range, and the Buckmaster fits the bill for the 450 perfectly. I'm assuming you're using it for deer hunting?
what is the plans for the rifle, what price range. if the rifle is a 200 yard deergun a good scope would be completely diffrent than if it is a cqb gun.
if your at the 1500 im set up in the back left corner. look for a big yellow sign that says aaoptics or a black sign that says bobcat steel. ill see if i can walk you threw the process.
also dont be tricked by the salesmen with the junk scopes in the front of the building. im a shooter not a salesman