I was gifted a 1924 made pristine Savage Sporter in 25-20. I scrounged an original magazine, moulds, bullets and brass for it. I bought a bunch of brass here from the late Grumpa, who made them from 32-20 brass. Somehow he figured out how to make them without much failure in production.
I will scope the rifle eventually. It DOES make a very nice 100 yard chuck gun. I am the neighborhood woodchuck assassin for a couple of farms next door and that sporter does the trick quite well.
You are right - 25-20 IS neat small game round.