I agree that for the shooting the OP describes, a solid 100 yard performance that is at least a 3 shot, 1MOA group will be good to 300 yards. Use a 2.5" high zero and a high chest/on hair reticle placement on the deer between 200 and 300 yards. There are two keys to success. The first is practice, that gives you a shot to shot, and day to day consistency at 100 yards from the positions you plan to hunt from. The second is building the control and confidence needed to make the longer range shot should the opportunity present itself. IMO.