The Europeans were so far ahead of anyone else in this regard, 6x57 in 1895, 6.5x57 1893, 7x57 1882, 8 x57 1888 then there's the 9, 9.3, and 10.75 all on the same case. The widely used .473 case head diameter is also a Mauser original dimension.
Some things are so old they're new again.
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