Agree - the "new" 5.56mm bullet needs to be not a .223 bullet at all, but a .30 cal bullet of 180 grains or so. I saw an article not very long ago in, I think, the New York Times stating that the US military was considering heavier caliber rifle cartridges for use in Afghanistan because of the long ranges. The article mentioned the superiority of World War II era Mauser and Enfield rifles used by the Taliban at the ranges at which they were being used! I could never understand the rationale behind fold-up .22's with 16-inch barrels firing a 55 grain projectile for use at mountain ranges.