I made 25 cal. bullets in the early 60's using 22 brass. You drove the case through a die to iron out the rim, cut a specific weight piece of lead wire and swaged a soft point bullet. they worked quite well. I still have the die set and some of the bullets. I have many Herter die sets, coils of wire and half jackets for swaging 22,30,35,44, and 45 cal bullets, as well as a wire cutter.
Bullets of that era are not up to current standards. I still have a bunch of Herters.