Blackops;
I live in rural Montana, hunt elk every year. You've been advised to forget the 26" barrel and I'll second that opinion. I don't know where you live, but a lot of elk hunting is done in territory where you can hunt both sides of one acre. You don't need the ungainly length and weight. To my mind the .30-06 is fine, but if you feel the need for more, go .338 Winchester magnum, not Lapua.
In point of fact, these days most of the time I hunt elk it's with a 6.5 Swede. And I don't feel in the least under-gunned.
900F