I think this cartridge is a great concept and will be as commercially successful as the .338-06, .358 win, and .35 whelen. This is to say that it will have a relatively limited following among people who really like it.
It is currently only available in one rifle, and a pricy one at that. The bullets that are being loaded for it are all premium bullets designed for use at .338 magnum velocities.
The short action works against this cartridge as it limits bullet length and weight. This isn't that big a deal because there isn't enough powder in the case to make the 225+ grain bullets work, even if they would fit in the magazine.
I think that since the most commonly hunted game on this continent is deer, a soft 200 grain bullet like the speer spitzer or 200 grain hornady flat point will would be great. But the only loaded bullets for this right now are a partition, an x bullet and I believe an accubond. The 210 grain partition may be a good "do-it-all" bullet if it is fired in a rifle that can achieve the advertised factory ballistics.
If this were available in a BLR, reington pump, etc., and loaded with a nice soft 200 grain bullet for deer, it would be a real winner.
Rummer