[Billthedrill]

Lots of things need to be worked out in the field. For example, moving up the chamber pressure to 80,000 + psi is going to shorten barrel life. Moving down to the brass case ammo to get lower chamber pressures to alleviate this will be fine for training, but it's enough of a different cartridge at that point that there may be a price to pay in terms of training authenticity, i.e. recoil. That may not matter for civilians. But man, that hybrid ammo is going to be expensive if and when they even do release it to civilians!

The other elephant in the room is that they'll be moving from a 6-pound rifle to a 9-pound rifle, more, of course, with the high-tech optics the military has become so fond of (and for reason). That's difficult to avoid if you're after terminal energy with reasonable recoil. But that's three (or whatever it actually turns out to be) more pounds of rifle that translates to three less pounds of other gear.

As a side note, I wish commentators would lose the silly affectation of worrying about a battle rifle penetrating too much drywall to keep the babies in the next room safe. This thing was designed to penetrate level 4 body armor at range, f'Petessake. Give it up.

[Red Badger]

We can’t all run around with 50 caliber in our cars and trucks................yet....................

[gundog]

Isn’t bullet velocity the culprit in barrel degradation? I see a listed muzzle velocity of 2830 fps. That’s not excessive.