I haven't fired more than a dozen rounds through my savage 23B simply because I had a very difficult time finding one over priced 50 round box shortly after getting the rifle. Had to make a near 150 mile round trip to get that one box.
There may be more .25-20 ammo out there now, but I haven't been looking lately.
Great rifle, and mines in about 90+% condition. Bluing is excellent, a previous owner had painted the metal parts, when the last scraps of paint were removed the bluing on the upper metal was still in perfect condition. Trigger guard amd magazine showed a sprinking of surface rust but cleaned up nicely.