I'm glad that the military has a 7.62 MG again. I carried an M-60 when I was on active duty thirty years ago, and I believe in it. I was a Captain in the reserve when they came out with the M240 in 5.56, and thought, with a lot of others, that was a step backwards.

As far as the 5.56 round goes; when I was a young enlisted and officer later, a lot of Vietnam vets told me that the reason for adoption of that round was because;

1) Carry more ammo,
2) Theory that a wounded enemy took two soldiers (at least) out of action instead of one.

I don't know how number two holds any water, and argued that point until I quit wearing a uniform in 1991.