My nephew is flying down kodiac in May for grizzly bear on a tag they cancelled over covid last season. I'v been passing on my guns to nephews so I don't pass on they get sold. I've gifted my 338 fed armalite ar-10 to him. It's actually a great short range bear gun. I've knocked down moose and bear with that gun and it's always nice to have a 20 rounder; just in case.
Unfortunately, for those of us who like the 6.8 SPC (6.8x43mm), the new SIG cartridge is much different - picture the .260 Remington necked up slightly to 6.8mm, with the case shoulder moved forward a bit, and a stainless steel case head to handle 80,000 PSI. The new round will probably make a great (if expensive) GPMG or sniper rifle round; as far as cartridges for infantry rifles go, it sounds a lot closer to the .276 Enfield (circa 1912) than the 5.56x45 or 7.62x39 - so I'm guessing full-auto won't be an option...
;>)