“Any news or feedback on the SFs 6.8Rem caliber project?”
I’d advise taking a look at the 6.5 Grendel before getting too worked up about the 6.8. It has far better ballistics, with similar knockdown power. The .308 (7.62 NATO) is too much recoil for an assault rifle.
www.65grendel.com
It’s also being evaluated by SOCOM.
I agree, both 6.5 and 6.8 rounds have pros and cons but both are superior to 5.56, and fit in the 5.56 envelope.