In the American market the idea is that all things need to be "new and improved" And for whatever reason, many American will buy anything new. In MOST cases it's new but not actually an improvement once we see the mission statement for the product. Faster doesn't always mean better and in many cases in the past, it's meant worse because the shell is developed, but no big step forward in the design of the bullets. Time will tell.

If the new shell is mated with a 1-8 twist and Nosler comes out with 180 grain bullets we may see something here, but considering the 7MM Mag has been made to use 175 grain bullet since 1961, and I have killed many an animal with both the standard 270 Winchester, the 270 Short Mag and the 7MM Mags (Remington and Weatherby both) and so far I have yet to see ANY difference in the way 7 mags kill and 270s kill (And I do mean NONE AT ALL)
I expect the Nosler boys will not set the world on fire with sales for long. I will want to see if I am wrong, and will be totally happy to admit it if I am.
But a "faster 270" was no big deal with the 270 Weather Magnum or the 270 Short Magnum and I seriously doubt it's going to be much of a deal with the 270 Nosler.

Will it kill the old 270? Well lets see.......

The 264 Win Mag was supposed to kill the 270. it didn't.
The 308 was supposed to kill the 30-06. It didn't.
The 30 TC was supposed to kill both the 308 and the 30-06. It didn't.
The 280 Remington was supposed to kill the 270. It didn't.
The Lazaroni cartridges were supposed to kill everything else. They didn't.
The Weatherby shells were supposed to kill the competition bore by bore. They didn't
The 300 Ultra mag was supposed to kill all other 300s. It didn't.
The Winchester 270 short mag, 7MM short mag and 300 short mags along with the Remington SAUMs, Ruger Compact mags and so forth--- were supposed to kill all the earlier magnums of the same bore sizes. They didn't.
The 375 Ruger and the 376 Steyr were supposed to kill the 375H&H. They didn't.
The 458 Lott was supposed to kill the 458 Winchester. It didn't.

And I may have missed a few. But ALL of these have been in my life time, and ALL of them were shoved hard by the gun-rags to try to make the buying public jump on the bad wagon and sell a lot of products for the companies that brought them out. In every case some frenzied buyers were quick to believe the tripe told to us all by the authors writing for the gun-rags, all of which get paid to say good things by advertising companies. Now and then a new shell comes out that has real merit, but not often. And those that do have something of true value sometimes do not become commercial successes.

SO when a given set of 50 to 70 year old ballistics are re-packaged into a new shell and then fit into a gun that it would not fit into before we often have a lot of merit to look at.
Like giving 257 Roberts ballistics to us and fitting into an AR15 (called the 6.8 SPC)
Or fitting 300 Win Mag ballistics into an M14 NATO length mag.(called the 300 Win Short mag)
Or fitting 6.5 Jap ballistics into an AR15 (called the 6.5 Grendel)
But a bolt action is not likely to be one of those cases.

Fitting a new shell into a bolt action with ballistics that are not all that new and do nothing in the real world we have not had available to us for 50 to 100 years is only going to impress those that are easily impressed, and soon enough the 97% of the shooters in the market will just ignore them and leave the companies and gun-rags to do the next job...........do it again.

Sell the next New and Improved do-dad to those that are easily impressed.

Not that there is a thing wrong with any of this either..........there is not! Other then one fact---
The outright lie that their new bla bla bla is going to kill off those shells that fit hundreds of millions of rifles all ready out there.....and that "intelligent shooters" (ooooo awhaaaa......look at how pretty the emperors new clothes are) will simply throw out their old guns because their 100 year old shell with it's 100% success rate just died over night because of the invention of the .297-superduperimprovedneverbeforeseenorimagined magnum.........or some other such thing.
Like maybe the Nosler shells.

I'll smile and watch, but I'll spend my money on powder and primers and the bullets I like to use in my old, worthless, can't hit a thing or kill anything, and should now be "dead" guns that have served me perfectly for all my life.