What do you think of the Winchester .405?

[Grumpy gumpy]

My gunsmith friend has an 1895 in 405 that has taken an asiatic buffalo and a wild scrub bull (imagine a slightly smaller cape buff with anger management issues) each with one shot, the scrubber ran for a bit before it realised it was actually dead. Lovely wood on it and the blueing is still pretty fair
gumpy

 

[Velo Dog]

I have limited (very limited) experience in shooting heavy, dangerous game.
That said, I would choose a more traditional dangerous game cartridge for heavy dangerous game.

After all that, I think a .405 with blunt shaped 300 gr soft point bullets would be a fun rifle to hunt non-dangerous game with, in thick foliage, such as the riverine forest conditions of Limpopo District, South Africa, up to and including eland, would be a real peach.