Thread: Optics for long range

OK all you practising long range shooters, I'm setting up a long range cannon and deciding on a scope. Currently looking at S & B but torn between 5-25 & 12-50.
Currently shooting deer to about 750yds. New rifle an AI 338 & looking to shoot 1000+ starting with steel. Is higher magnification than 25 useful? Even for spotting without a separate spotting scope? Or does mirage kill that idea?
Or is a 5-25 as high as you need to go.
I've had 5.5-22 x 56 nightforce, and used a mates 5-25 S & B.

Thanks in advance, for the educated input from guys that are doing it already!
Ta,