According to some posts I've read the 7.62x54R was the most chambered caliber despite what American's might think!
Original Medved (bear) carbines were made in 9,3x54R - a special hunting cartridge developed in USSR by necking out the 7,62x54R. This version was made in limited numbers between 1965 and 1974. In 1974 it was replaced in production by Medved-3, which was same gun but chambered for local 7,62x51 (down-loaded version of .308 win). The latest version is Medved-4 in .308Win, which is a very limited order gun.Max may correct me but wasn't the Medved carbine made in 7.62 x 54?
in 9,3x54R - a special hunting cartridge developed in USSR by necking out the 7,62x54R
It well could be true; the tech transfer was mutual during post-Ww2 period - Finns used many Soviet / Russian weapons, so it is possible that someone just copied Finn cartridge.but it was my understanding that the in 9.3x54R was in fact developed by the Finns
I believe the 7.62x54Russian is a good conversion on Lee Enfields and an improvement in accuracy is generally achieved. do a search on the 303 page.