jap arisaka is a mauser clone, first rifle I see for the 7x54 Sako
factory round based on 6,5x55 like the 8x54 krag

most of this ammo was probably shot in the mas 36 in 7x54, a very similar but different cartridge

http://www.lahdeniemi.fi/Sivut/kayt-kiv.htm

british made 425 Westley Richards
http://egun.de/market/item.php?id=7276709

until now cheap