I gotta tell ya , for me all HK products are butt ugly, and too expensive . I made a couple of investment buys of MP5 series NFA toys and made good money on em. Aside from the HK21 series and the P9S in 45ACP I have never had a "desire" to use or possess one.
HK these days will have to appeal to the homeowner, rancher, farmer, housewife and hunter sect to make a product sell. The new 6.8MM is a fine medium to work with IMHO for an all purpose round for a general purpose rifle for self defense or up to Elk size game . I took my first 4 elk with a .243 so it can be done easily.
Stay Safe LC.....
The article was the first of a two-part series on the round, and mentioned that the bullet itself was based on the .270 Winchester, while the case was derived from the Remington .30. no data on powder or primers, sorry, that was classified still.
All in all, a positive development, as such "special-purpose" rounds have a way of becoming standard issue after a while. Must be why the XM-8, at last word, is designed to be easily convertible to this 6.8mm. We might begin this century with an all-new rifle AND cartridge in place, only a few years late.