Thanks for the info... I guess it all depends on the mission you are on for what would be best.
Yes you can carry more rounds of 5.56 than 7.62 ... but, if each soldier was a RIFLEMAN they would only need one or two rounds of 7.62 and not 10 rounds of 5.56.
Ramp up the M14 production lines!!!!! And bring back the M1 Garand as well ... infact bring back that "old stuff". John Browing was way ahead of his time.