The Nearest thing ( Rifle, Cart, Bullet ) to, Elk Killing, "Perfection" that I've ever, used / found was, a Weatherby .340 or, .338 Win Mag with, a 25 - 26 inch Barrel, Launching,.. 210 gr. Nosler Partitions at,.. 2,975 to 3,100 FPS ( Best Used with, a BRAKE, tho ! ).
Shot Mine, Un-Braked for many years. Fortunately, it "Clover Leafed" 3 Shots, to SAME POI, every Year so, Re-sighting annually, was Minimal !
Sadly,.. I did NOT, Practice much, with it ! It had, a 25 1/2 " Douglas Premium Barrel, Glass Bedded, Honed Trigger to 2.5 Pounds, Leupold 2.5 X 10.
I'm a MUCH better shot NOW, after shooting, a .270 WSM with, 140 Nosler AccuBonds and, 140 Berger, Classic Hunters @3,200 FPS, for the last several years and it, Kills Elk, just about, as "Good",.. for Me ( Maybe, I got Lucky ,.. LOL ). My Shoulder "thanks Me", for Selling the .338 Mag, tho !
PS; in the .270 WSM,.. the BERGERS,.. killed, better,.. IMO