In 1912, Brenneke designed the commercially rather unsuccessful 8×64mm S cartridge (again in production since 2001). It was intended as a ballistic upgrade option for the Mauser Gewehr 98 rifles that were standard issue in the German military. The German military chose, however, to stay with their 8×57mm IS rifle cartridge avoiding rechambering their service rifles for a cartridge that, due to its more favourable bore area to case volume ratio, would ballistically outperform the .30-06 Springfield cartridge of the United States Army. Brenneke’s engineering concept was to create new, very powerful (for the era) cartridges by enlarging exterior cartridge case dimensions like overall length and slightly larger case head diameter compared to the German 8×57mm IS military cartridge case, coupled with an increase in maximum pressure. The concept was essentially sound, and he persisted in the development of new cartridges along this line.