378 WEATHERBY MAG

The 378 Weatherby Magnum is an original cartridge with no parent case, although the great Roy Weatherby was inspired to create it by the 416 Rigby. It too is a Big Five cartridge – capable of anchoring all African large game – with a 260 to 300 grain projectile that can transfer over 5,000 ft lbs of kinetic energy to its target at close range. A popular starting point among many wildcatters, and responsible for the excellently named 22 Eargesplitten Loudenboomer.