High drag bullet to improve terminal performance? Never been done before, we need a highly designed and tacikool looking bullet that isn't as high drag as older, superior, simpler designs.
Also, there is no such thing as a cartridge that can raise the internal pressure limit. These cases might have some real value, I'm not going to argue they are bad or just a fad or meme, they might be the real deal if they can prove themselves. But, only the CHAMBER and ACTION determine pressure limit, brass can handle any pressure. In fact, case choice has NOTHING to do with pressure limits. This is a misnomer, what they are actually pointing out in advertisements is that these cases should be tougher and handle more reloads at higher pressures, an advantage this type of case might have in certain applications, not so much in others (these cases might be able to be reloaded dozens of times at high 9mm +p+ ranges where brass might fail after a dozen, but in low pressure loads they offer nothing because brass can handle dozens of reloads at 20K or less PSI). In truth, steel, aluminum, thick and thin brass cases all come to the same Maximum Average Pressure, so do these cases.