I just got a new Savage Axis 308 and have a question. I only have 80 yards in my back yard to set my scope right now, I normally set it on a local farm 2 inches high at 100 yards but they have cattle in there for the next several weeks and I wanted to go ahead and get it set. If I had it set at 2 inches high at 100 yards, where would the 80 yard impact be? I am using Fiocchi 165 grain soft point or Hornady American Whitetail 165 grain soft point. Thanks for any help.