I think I'd rather have one than a Weatherby, if only because of no belt.
The factory ammo is 210g @ 3000fps with a 24" barrel. That puts it up there with a RUM if using Nosler load data.
No need for one here, though.
I've found the best way to deal with the belt is to ignore it.
Pretty much what I do. Still, it is a completely unnecessary anachronism and from an eye appeal standpoint I prefer cartridges without them. If I was going to buy a super-mag .300, which is quite unlikely, my preference would be for it to have a Nosler .30 chamber.