I looked into this when I purchased my first AR. The Ruger AR-556 (Sorry, Springfield) allowed both .223 and 5.56 to be run reliably. The "boutique" loadout of .223 Wilde wasn't really a thing yet - at least on my reading list - but I can absolutely appreciate the engineering that went into its development.
Great article. I had been wondering about this subject for a long time. Too bad I cannot print it, my print preview only shows one page and that is a mess.
The .222 Remington Magnum was initially offered as a benchrest round to offer enhanced 200-yard accuracy over the .222 Remington. The military grabbed the cartridge for testing. This led to development of the .223 Remington.Great article and very informative. You mentioned the .222 Magnum. I have a friend who has one and it's becoming very difficult to find ammunition. Can you comment on the .223 Wylde in relation to the .222 Magnum?