How about a 26 Nosler?

[Norm]

http://www.nosler.com/news-and-articles/2013/11/22/the-26-nosler

"this is the quintessential deer, antelope and long-range target cartridge available on the market today.” –Bob Nosler, CEO/President Nosler, Inc. "

[Longranger]

If it is a 280 just necked down the it will be pretty hard on barrels...

[bruce moulds]

it would take a bigger case than the 280 Ackley necked down to achieve those ballistics without a special powder.
this would make it even harder on barrels than a 6.5/284, or even a 264 win mag which cannot do those speeds with that bullet wt in hunting length barrels.
probably more suited to small to medium game than target use.
keep safe,
bruce.

[OuttaAmmo]

Apparently it's a 6.5 SAUM/wsm thing....
Invented by barrel makers you'd think.

[Norm]

It has not been released officially until the shot show but think of a 6.5mm Blaser cartridge with 107gn H20 capacity.