If the 180 Ballistic tip shoots that good in your rifle (muley at 580 yards), and you are looking at 500 yards max on a elk, I would try the 180 AccuBond. It will most likely shoot just as good as the Ballistic tip for you. Might also consider stepping up to the 200 AccuBond.
The Berger 210 VLD can be a challenge to get shooting well. Just look at all of the long range shooters that dropped them like a hot potato when the 215 Hybrid became available. If you do get them to shoot though, you would be amazed at their accuracy. But you could spend a LOT of time and money and find out they do not shoot well in your rifle. Plus with the component shortage, I doubt you will be able to find enough 215 Hybrids to work up a load with by this time next year. The Noslers are usually more available due to their cost.
Inside of 600 yards, you don't need the Berger. Don't change what works for you. Noslers shoot very very well, as you already know.