Just pondering why you are so certain that 6arc wouldn’t kill an elk, as long as the projectile is kept above the minimum recommended velocity to expand? and why you assume that impact energy must be 1500 ft/lbs or greater to kill a slab sided ungulate? A well placed, violently disrupting bullet, with more than adequate penetration > 14” will kill anything in North America… or at least that has been my experience. But bottom line, shoot what you shoot well, shoot what you shoot a lot, and shoot what makes ya happy