Has anybody bought or built a 465 H&H? I'm looking at several 465 H&H cartridge drawings and I'm seeing two different rim diameters, one is .602 and the other is .579. I know the .579 is the rim diameter of the Weatherby cartridges. Anyone know which is the correct rim diameter for the 465 H&H? Could a rifle be made to feed both rim diameters reliably?