Up to you, but I think there may be another option you aren't considering: carry two different types of bullets. I have also chosen the 208 Bergers as my bullet of choice in my new 300 Norma Improved, but I don't have any personal kill results with it yet since I just had it built. I've used other Bergers before on Elk and they've typically worked well. However, like you and others here, I figured that bullet leaving about 3300fps may not do well on an elk shoulder at 100 yards - and you can't always be picky on the angle when they pop-up in the timber near you. Solution: I chamber something like a Nosler partition or Swift A-frame for my walk to and from my long range "perch", because you just never know when Mr. Bull may come to you. Once I get out there, I can switch to my Bergers. (I tend to keep them warm in a pocket until I'm ready to shoot anyway, just to minimize the chances of a temp-affected change). Obviously, the close-range load still needs to have a similar enough POI to hit your target, but my partition load wasn't that far off of where my Bergers hit at closer ranges - they were at least minute-of-elk for those first few hundred yards.
I guess it depends on if you plan on a lot of walking and a mixed-range hunt, or if you will have a spot where you will be primarily LRH, unless you happen to have a dedicated rifle for each of those cases. For more of a mixed-range hunt I may consider more of a possible compromise one-size-fits-all bullet, like some mentioned. However, for a mostly long-range dedicated rifle and planned long-range hunt, but with the contingency of handling a surprise short-range shot, I prefer the 2-bullet approach, especially if you already have a 1/3 MOA load and bullet that should do very well at range. Not pushing my approach on anyone...just tossing out an option that hasn't been mentioned, and that I think works well for me.