This is basicly how to do it. Melt the copper and pour a rod shaped ingot close to the desired bullet diameter. After the ingot cools run the ingot through wire drawing dies. Make your final wire die the finished size of the bullet. Make a bullet die for swaging the ogive of the bullet then use a hydraulic jack press with your die setup. Cut the bullets to the proper lenght and swage them.
Corbin dies used with tubing and sheet stock are designs for jacketed bullets.