Guys, ya gotta remember, they need to keep the cartidges about the size they are, soldiers have to hump enough schit on their back. 180 rds of 5.56 is a schit load lighter to carry than 180 rounds of 7.62. I can see the 6.8 being a good round. How many here have had to carry 3-400 rounds of 7.62 on my back, I know Sean and MontanaMarine have gotten to experience that joy. It ain't fun! Basic battle carry for an extended patrol for the typical Army grunt is six 30 round mags, plus 200 in a box, in your ruck.
I know, I know, the guys in WWII and Korea didn't have issues, but we have good ammo for the 5.56 right now, jst the M4 with that little short barrel takes away some range, Sean hit it dead on, issue M16A2's, give them the range back, big effin deal it is a bit longer and it isn't tacticool, I'd rather be able to make the long shots when it counts!
