Good article.

At one time the .222 Remington was the most popularly and common centrefire rifle in Australia.

My first centrefire rifle, my first firearm in fact I owned myself was a .222 Remington 788, the original model. Not the later shortened barrel version. The chunky ugly rifle is the most accurate rifle I own and still have it. Must start using it again.

Later acquired a Martini-Cadet .222 Rimmed rifle. Also mentioned in the article. Never shot this one, a safe queen. Only is set up for open sights and needs a scope added to make use of a .222 R chambering.

The first double rifle I shot was a Frankonia U/O in .22 Magnum and 5.6x50 mm Rimmed. The 5.6 very thin barrel was extremely accurate.
Tikka 512/Valmet under and over in 12 gauge and .223. This is another barrel set still to be used. Also needs some sort of scope setup which also allows the shotgun to be used. Another safe queen barrel ...

I would lust over a 5.6x50R double rifle like Ahmed has had made.

And the epitomy of the .222's is a vintage Sako L46 ...

I've never seen the need for a .22/250 or a .220 Swift, though I would like one of the latter. Too fast for edible small game. Both are perfect for kangaroo shooting. The speed is great for varmint shooting if one does that.

The .22 Hornet is one of the best for edible small game shooting. The .222 is fine at medium ranges, close on, it too does some damage, takes the head and neck of a rabbit.

The .223 is a good choice for an "apocalypse" rifle, able to use available ammunition supplies ... don't like the .223 though for some reason, do not like the .222 and 5.6x50R.