 This malfunction with under-powered cartridges does occur with Browning-type and other pistol designs as well, but the Luger is sensitive to cartridges other than the brass-cased ammunition that it was designed to use.Submachine guns were found to be effective in trench warfare during World War I, and experiments were conducted to convert various types of pistols to fully automatic machine pistols, including the P08.The Luger proved to have an excessive rate of fire in full-automatic mode, however, as did the Mauser C96.