Quote Originally Posted by Uesugi Kenshin
Actually I looked at a site all about the round and though you are right on that one there were also many other versions. There are tracers, incendiaries, armor piercing incendieries, Czech specific rounds, special explosive machinegun only rounds and so on. But all of those other ones are now obsolete.
The 7.62X54R was considered obsolete a century ago, but it's still in use.