You are correct PJ,
The die noted is for a .300 H& H cartridge and not a .300 magnum. The 300 H & H cartridge was considered a Big Game Safari round, was it not? I suppose that utiling the 'Firearm Economics' first brought to our attention from Catfish would dictate that after said acquisition of a .300 H&H rifle, I'd have to book a safari trip then, wouldn't I?
"But Honey, I already haver the reloading die!"
I did offer this gentleman $400 for this collection pending inspection and condition of the noted items listed and he agreed. When I actually see the items listed in a couple of weeks, I will respond accordingly.