Actually, I have found it very interesting. While you two may not agree you both are supplying points of view that could, might be accurate.

Question though to 470Rigby. Which would be the Magnum, the .222 Remington or the .223?

I think that since no one else seems to agree on what the term means that we could provide the defintion. Who knows, in 50 to 100 years maybe some erudite scholar of antiquites and obsolete powder driven weapons will quote 'NitroExpress.com as the ultimate authority on the derivation of the term. Either that or it will be credited to a TV show.