sentences:  In properly adapted standard military Gewehr 98 or Karabiner 98k service rifles the large 6.5×68mm cartridges are, however, praised for very smooth and reliable feeding.The widespread availability of standard size Mauser 98 rifles and the fact that the .375 H&H Magnum cartridge and its necked down version the .300 H&H Magnum with approximately 72.4 mm case length were too long to fit in standard sized Mauser 98 bolt action rifles makes the shorter 6.5×68mm, 8×68mm S and .375 Hölderlin interesting chambering options.World War II spoiled the commercial introduction and spread of the 6.5×68mm.