I agree with Buano I only just got into the shooting game and bought a Bushnell for my .22 and a Zeiss Conquest 3-9x40 with Rapid Z600 for My .308, I love the Zeiss. I have not hunted as of yet but I have done some long range and I love the RapidZ reticles, very easy holdovers just aim and shoot no thinking. Once your zeroed at 200 yards go to Zeiss RapidZ calculator enter info and presto your dialed in for up to 600 yards with no thinking about it.
Its not that simple. If you sight your rifle in at such and such weather condition a change in 20 degrees -or+ results in 1 MOA adjustment . If you have a tail wind or a head wind those also change every thing.But under ideal conditions they're cool.