 According to the official C.I.P.guidelines the .375 Hölderlin case can handle up to 380 MPa piezo pressure.According to the creator of the .375 Hölderlin, Mr. C. Otterbein, the idea behind the .375 Hölderlin was to develop a big game cartridge based on a German cartridge case for standard sized Mauser 98 bolt-action rifles.