Put it this way,it is what you are comfortable hunting with,I lived in Billings,Montana for over 20 years,was much younger then and as wirerie as spring steel. Some of our hunts were in 25 below zero with 4 feet of snow on the level. and our hunting was from going out at 4 am and getting back at 7 in the evening.Had hunts that were in September and it was 85 out and the next year it was 10 above at the same time.All hunts were always spot and stock ,BLM and Forest land ,when you got back you fixed your dinner and hit the sack. My farest Elk shot was a little over 960 yards, the other was a Antelope at 625 yards. What I am sayin is both were shot by a 700ADL 23 !/2 " barrel, both died almost instantly. Shoot all the time ,go out and learn how to judge range,wind drift and know your pulse. I guess what I am saying is remember you are packing your rifle all day long unless it is a canned hunt ,then it's not a real hunt. the easy to pack your rifle the more energy you have, Remember you still have to pull the trigger, and the scope I had on my Antelope was a 4X Universal,from 1968, made in Japan,on the Elk it was a 4-12 Redfield,, very easy to hunt with on long days, the rifle was steel bedded and floated, my mistake was when I bedded it ,the bedding started to set sooooo I got in a hurry and back then we used floor wax as a release agent.........missed some spots and it was a permanent one piece rifle. If you have a guide who drives you around then by all means go for long barrels but that means the bullet is tn the barrel longer and it only takes milliseconds and you can be off from the time you press the trigger. Hard Head