I've used the 140g Interlock on deer from a 6.5x55, but not elk. I imagine if you place your shot well it will work as expected. But personally, if you already have a 130g Accubond clocked at 2,925 that's shown positive results on multiple deer... I think you're already where you need to be.
But elk season is a ways away and I wouldn't want to discourage a fellow reloader from tinkering with something new.
