The 7-57 is ok as I said. It's a rifle cartridge at least and that has to be good.
However it's a looser in wars and really not best for anything!
It would be ok for medium game at medium and short ranges. That's about all it's adequate for.
I could have used the little 7-57 for woods hunting but it's not best for anything.
Now at longer ranges the little 7-57 does not even have the range or power that the 270 has! I have one only because I wanted a Brno 21h.
Also the defunct 7-57 does not fit actions. It's too long for a short action and too short for a long action. That's another reason why nobody bothers with it.
Nobody uses it for target competition either.