The straight 7mmRM is a great round, but as a pure elk rifle I'd move toward a caliber that has a good selection of heavier bullets. The 300Rum comes to mind for a great 700yd elk rifle. Rem 700 and Leupy will work fine.
If some is good and more is better, then too much is just right.
My mind is a raging torrent, flooded with rivulets of thought, cascading into a waterfall of creative alternatives