What do you guys think of the 450 Rigby? I was curious because you always hear so much about the 416 but not much at all about the 450. It seems like a great cartridge..... 458 bullets so lots and lots available, you can load it anywhere from 458wm range to 460wby range with lower pressures. I think there is factory ammo available for it, It has plenty of room for heavy for caliber bullets....I have seen up to 600 gr and as low as 300gr. I read an article discussing the 450 Rigby and the author had loads with 500gr pills @ 2566fps and 600grs @ 2214fps.

Anyone have any opinions, info and or experience with the cartridge?