If Barnes could/would make a monometal TSX .25 bullet of a length to function in our slow twist Savage barrels it would negate that premise, I believe. I'm a Luddite in many ways but even I can understand the tremendous advances in modern bullet technology that have pretty much evaporated the wisdom of our fathers in such regards. A TSX out of a .223 will smash through both shoulders of a deer and cause mayhem in between (and I'm not advocating for .22's for elk mind you), so why wouldn't a larger one do the same in an elk?
I've used the 75 grain original Barnes X in 1-14" ROT barrels to shoot whitetails with rifles chambered in 250-3000 and 25 WSSM. I bought a couple hundred of them many years ago so that I could shoot deer with rifles that had been zeroed with 75 grain VMax without having to rezero them. Not the most accurate bullets in the World, but accurate enough for shooting medium game.
