New US Army Rifle

[Woodsy]

So the wheel has come full circle in the past 70 years! The British-designed .280/30 cartridge was rejected in favour of the 7.62x51, which in turn was replaced by the 5.56x45 (which went through a number of modifications) and we now have a composite (read expensive) cased 6.8x51 that is about 15% better than the original .280/30 but at a 40% increase in operating pressure. Why not just use a steel-cased 7/08 at about 65,000 PSI (or a similar sized 6.8 that will not fit lower pressure sporting rifles), essentially the same result at a greatly reduced expense. How much public money has been squandered on this bumbling mismanagement over the last century?