All available cartridges in the caliber 204 Ruger by Norma. The 204 Ruger is somewhat of a specialty, it's fires a light and fast bullet that is exceptionally well suited for varmint and small game. While 204 Ruger is not the most widely used caliber in the world, it enjoys a loyal following among hunters, especially in the UK, which we are proud to serve here at Norma.