You can readilly tell if it is a '93 ( or '95, same ), or the more modern '98... look at the reciever ring ( the forward-most part of the action, where the barrel screws into ). If the diameter is larger then the area directly behind it, it is a large-=ring '98. The larger "step" is obvious.
If the diameter of the reciever ring is the same as the area behind it, it is a small ring ( no "step" ).
Both have been converted to the 7.62X39, some of the owners are happy with them. Like others have mentioned above, I think the best way to go would be to find a surplus barrel in 7X57, or if getting a new replacement barrel, they are available in .257 roberts, 250 savage, both of which would be fine plinkers/hunters. Both of the above are factory loaded to moderate PSI, which is a plus, so you don't stress your action so much. Another good choice would be a .35 Remington, a real good cast bullet shooter, plinker, etc.
Mark