[Badger52]

Re-reading, if you're looking at elk at that distance you really do want to be throwing a .284 of 160gr or so, or a .308 180gr - of stout bullet construction. Both of those can be had with great BC's & outstanding ballistics. Otherwise it's into 300WSM territory (again my prejudice against belted cases) and they do bark notably more if that's a concern but they can sure reach out there. Judicious handloading will get a 7mm Rem Mag or 30-06 there no problem. Also, from lots of rounds out of the barrel on both of these (my heart is with a 30-06) both those calibers have some really good factory loads available that do what they say & still yield a couple thou in energy out at 300 where it matters. (Hornady's 162gr 7mm RM load is superb & consistent.)

IMO the .270 is a wonderful cartridge but only if handloaded. During a period owning a lovely M70 Featherweight I did quite a bit of chrono work and collected once-fired brass the old-fashioned way, as well as a binder full of data. Wonderful as it is, in most factory loadings, the .270 is one of the most over-rated rounds from its published ballistic figures in a hunting size rifle whose data ever got published (many decades ago). Just my $.02 but based on actually shooting it, alot.