04-07-2012, 10:14 AM
I very much doubt it. I can't see anything being adopted as a straight replacement for 5.56mm - the military has too much invested in it and refuses to admit that there's any problem with it.
What there is interest in is a cartridge which can reach out as far as 7.62mm while weighing a lot less. The 6.8mm Rem can't deliver this - it doesn't have the range - but the 6.5mm Grendel could. Of course, if such a cartridge were adopted to replace the 7.62mm MGs and rifles at squad level, there wouldn't be any point in carrying the 5.56mm as well, would there?
What there is interest in is a cartridge which can reach out as far as 7.62mm while weighing a lot less. The 6.8mm Rem can't deliver this - it doesn't have the range - but the 6.5mm Grendel could. Of course, if such a cartridge were adopted to replace the 7.62mm MGs and rifles at squad level, there wouldn't be any point in carrying the 5.56mm as well, would there?