game less than . Soon after the .30-378 Weatherby was designed it was adopted by the benchrest shooting community. It became popular among the shooting communities such as the Original Club of Pennsylvania and went on to shoot world records at that distance. The Thompson Long Range shooting school uses the .30-378 Weatherby due to its high accuracy and reliable performance. See also List of rifle cartridges Table of handgun and rifle cartridges 7 mm caliber References External links Further reloading data at Hodgdon .30-378 Weatherby by Chuck Hawks The .300 Super Magnums by Chuck Hawks Cartridge Dimensions at Steve's Pages Pistol and rifle cartridges Weatherby Magnum rifle cartridges