IAs for effects on actual wars... I can't see much difference, except the possible butterflying away of the M16.
Assuming the Falklands still happens, Britain and Argentina could quite possibly both be using EM2. Or Argentina might still use the OTL FAL, giving them a range advantage over the British soldiers for the wide open featureless plains and mountains of the Falklands. In light of this, might we see a return to heavy calibre rifles in this timeline?
If the .280 Enfield is adopted, & the size of the case & projectile is eventually reduced in order to reduce the overall size of the round, then today the NATO round is basically a 6.8mm SPC.
Doubtfull. 5.56 NATO was introduced because 7.62 NATO was too heavy, the 6.8 SPC sells itself on being lighter than the 7.62 and heavier than the 5.56, with the .280 you've already got something that does that, shaving a couple of millimeters off the dimensions isn't worth the effort.
If the British adopt the EM-2 in the .280 British and the other European NATO memebers adopt a rifle chambered in the .280 British the US will have no choice due to the whole NATO standerdization thing. So you have American troops using an American rifle chambered in the .280 British which will be called something else most likely 7 mm NATO. Now I assume the Americans jump on board with the .280/30 which was made to accomadate the Americans.
Argentina will go for the FAL in .280, unless the US goes it alone there'll be little demand for 7.62 NATO assault rifles and the Belgians favoured the .280 for the FAL.
The Americans will adopt whatever they want everyone else be hanged. They insisted on the 7.62mm NATO in the 50's, when all the evidence was saying the .280 was a better choice, and when it was proven that the 7.62mm was unsuitable for it's role the US switched to a 5.56mm round wihtout a thought to NATO standardisation.
I forgot about that. It seems FN were as up for .280 as anyone. Having a .280 FAL might be as much a PoD in itself...
No you see the it was ok for the US to completely mess up NATO logistics but when other NATO states did it the US got angry. The US, especially during the early days of NATO, thought as the boss and they could do whatever the wanted but everyone else had to tow their line.
Isnt't that more or less what I just said.
I found this thread he's posted in several times, but it's from four years ago. Be interested to see if he's come up with anything new.
http://www.thehighroad.org/showthread.php?t=122211