I am very aware of it, though some Americans don't seem to be.
On the other hand, if the Chinese Mauser was the inspiration for the .270, it would seem logical for Winchester to have gone directly to the .270 bullet in 1912, when they developed their .288 cartridge, as the Chinese round apparently appeared in 1907, at least according to one source. It was also pretty much based on the 8x57 Mauser cartridge necked down, not the .30-06 case as was the Winchester round.
