Based off of the .222 Remington Magnum cartridge and stuffed with a .20-cal. Hornady bullet, the Ruger .204 cartridge supplies 4,200 f.p.s. with mild recoil and surprisingly good barrel life.
William Batterman Ruger is best known for his innovative mind in the firearm industry. His first design, the Ruger No. 1, is considered by many to be one of the finest single-shot rifles ever made.