>Is 6.8 NGSW a meme?
There are 3 different projects: one uses telescopic polymer cases, the other two use a normal design. But one of the normal ones has a plastic case with a metallic end, and the other one has a brass case with a steel end. Now that very last one is inherently retarded, because at that point you should go for a steel case and call it a day.
With all of that said, I don't understand the premise to begin with: the Army developed a 6.8mm projectile and just told the competitors to make it go sanic fast. If there was a bit of sanity they would have set certain criteria for the projectile (e.g. penetrate this kind of armour at this kind of range) and just let everyone compete to come up with the best cartridge that can deliver this performance. And of course a cartridge should be developed together with a barrel, so that you don't have to figure out the correct length and rifling (if there is rifling to begin with). Once you have the barrel and cartridge you can start designing (or adapting) firearms for them. But this? This is just retarded.
And lastly, there is the criteria in question: we just don't know what the hell they want exactly. Actually, it looks like they themselves don't know what they want. Increasing the firepower of the rifleman is a noble goal, but only if you know what you want him to do in a firefight, because then you can figure out what he needs to do his job. All they seem to know is that they have this 6.8mm projectile and they want weapons that fire because overmatch
>If so, what caliber should we have switched to?
Pic related in the 1950s, so now we wouldn't have all of this nonsense. Don't get me wrong, this isn't some kind of an Überkugel that got everything right, but it seems to be good enough for the job. We could make much better cartridges now, of course.