The 10mm cartridge was originally intended as a means of increasing the power of the Browning High Power handgun. Using a .38-40 (.400 inch) bullet and a shortened .30 Remington rifle cartridge the new cartridge proved too much for the High Power type pistol. Later, the .40 Smith and Wesson did not, but that is another story. [Read more…] about Loading the 10mm
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