Like many of the Weatherby magnums, the .300 can trace its lineage to the .300 H&H Mag. Holland & Holland arms and ammunition have long been favorites among discerning international sportsmen ...

I was lucky enough to get my hands on the first 6.5-300 rifle to be sent outside Weatherby’s headquarters in Paso Robles, Calif., a Mark V AccuMark, along with a couple boxes of handloaded ammunition.