blackaj, 'accuracy' is relative, and 'long range' is relative to this.
But I don't consider 1moa to be accurate at any distance.
Complicated or simple, the truth is that nothing is free. Everything falls into a balance.
Can you think of one 'free gain' in this realm?
Truly, the best you can do will always be a best balance.
You can't add a bunch of chamber area and powder to that which is otherwise accurate -without prices paid for it.
The 6.5x47L is accurate, flat out. And with it, you could technically drop any American game with brain shots at distance. But for 140gr bullets(best in 26cal), it's a bit slow, wind drift is still up there.
Bump up capacity 8grH20 to 260AI, and you improve the whole game(to mid node).
But bump the capacity another 10gr to 6.5x284 and things unravel a little. With this you have to pay prices. Great brass still, but it don't last given chamber area, and accurate barrel life drops to ~1200rnds. It is also not as accurate as it is downloaded to the most accurate ~3kfps node (better covered by 6.5x47L & 260AI) for 1/2moa results. This, because higher nodes are not as accurate. Basically, it's too big for cal and has faded from competitive favor.
Bump capacity another 14gr to 264wm, and you're left bragging of viable 1moa in accuracy. You won't sustain 1/2 moa like a 6.5x284, or 3/8 moa like a 260AI, or 1/4moa like a 6.5x47L. There is absolutely nothing 'inherently accurate' about it.
Nothing good about it's brass, case design, chamber area, sizing requirements, barrel life, recoil, or muzzle pressures. You will never see a 264wm holding it's own in competitive shooting.
I know many hunters put destructive potential ahead of accuracy.
But I'm sure fewer will follow this in the future. They'll buy new guns here & there chambered in better cartridges. They'll get used to easier accuracy, and be less tolerant to bad balances of the past.