The .223 round is a derivative of the .222 Remington...not the .308 or the .30-30
Of course. It's really surprising that even a DUmmy would be making statements like they did. Anyone who had ever seen a .30-30 round, and a .223 or .222, would see the only similarity is the fact the cases are made of brass. It's surprising such a moron has ever heard the term "necked down".
I use both .300 Savage and .222 Rem. a lot.
One similarity is that in the '50s both were available and extremely popular in the Remington 722, and I believe for a short time both were chambered in Win. Model 70.
Both rounds are rimless, and that's about it.
The Savage is great for whitetails, and the .222 is a groundhog machine.