Ganyana (Don Heath) worked as a wildlife officer/Game Warden in the former Rhodesia, later Zimbabwe as well as a professional hunter. Chief Examiner for the PH qualifying exams for Zimbabwe and involved in many wildlife management projects, experiments and Ganyana is his nom de plume. He is still the R&D manager for Norma of Sweden and writes extensively on rifles, cartridges, hunting and wildlife. The 44 Ganyana is based on the 404 Jeffery case.