I have yet to buy into the whole long range thing. Partially because I dont necessarily agree with shots over 500 yards on game. This probably has to do with the fact that I dont have the skills or confidence to make that shot ethically. However some people on here do and that's awesome.

I went with good glass (Leica) in a medium power range (2.5-10x42) and 30mm tube. Capped turrets and a simple plex reticle. With my rifle zero'd at 250 I'm capable of hitting the kill zone out to about 300-350 yards. Never found the need to shoot further than 300 yet and didnt find the need for any better glass or scope power. Gets the job done!