And you see it with the Army trying to get a new 6.8mm caliber round...
6.8mm... .277... An "American caliber"... which is in fact a Chinese caliber.
6.8x57 Chinese Mauser, 270 Win, 270 Weatherby where the only .277 caliber cartridges for a looooong time.
The "other" myth is that Winchester were left with a boatload of 6.8mm bullets after a Chinese Military contract went south.
And as a result they "invented" the .270 Win by necking down the other cheap brass was available. 30.06.
Just "a fluke" it basically copied the 7x64 Brenneke.
