My personal opinion …
It's better than a 5.56 if you want to recover the hog. It's not as good as a 6.5 Grendel or 6.8 SPC II, but the 300 BLK does have the advantage of offering subsonic ammo if that's important. I view it as a fairly short-range weapon (<125 yards) although it can obviously be used beyond those distances.
The .308 AR-10 variants offer good hog-hitting power and excellent ammunition selection, but they are heavier than the AR-15 based weapons.
That's my 2˘ worth. YMMV IANAL MTFBWY
You can never have too much ammo — unless you're swimming.