Somewhere around here I have a book with information on the various Finn wildcats based on the 7.62X54R case. They came up with a wide range of such cartridges, mostly using barrels or barrel blanks made for the various mauser and other rifles they'd used in more limited quantities, such as Swedish and Carcano 6.5 and Mauser 7mm, even a few using .22 barrels.
I don't remember much about that article but it was likely they spliced barrels in the same manner used by Australian gunsmiths when adapting the Lithgow actions to smaller or larger bore wildcats.
Seems like there were 9mm or slightly larger bores among these, and theres a 9X53r version based on the 7.62x54r used in the Medved sporting rifles intended for bear and large bodied game animals in Russia.
You don't hear much about the Russian largebores since in the old Soviet only a few families of professional hunters, commisioned by the government for predator control and such, were allowed to own high powered rifles for sporting use. Everyone else was restricted to small bore rifles and shotguns.
PS
There is a Finn 9.3X53r thats similar except for bore size. Perhaps Lapua has reloadable brass for these.
http://www.municion.org/9_3/93Finnish.htm