I shot a .460 necked up to shoot .510" bullets. The rifle was built on a ZKK 602 action. I suspect this should have been called a .505 Barnes Supreme.

The box as I remember it, was marked .510/460 WTBY - 125gr. of IMR3031 600gr. Barnes 2,450fps - supposedly. I do not know if that load is a safe one, but that is what was as I remember the markings on the box.

I later checked and found the .460 WTBY used up to 126gr. of H4831 with the 500gr. Hornady.