Please help me understand the .458's

I understand from a previous post that the "regular" 458 and the Lott are interchangable...is that correct?

Are the regular 458, the Lott, and the 458 WinMag interchangable?

I've heard that you can resize and reload 375 brass to 458, is that right?

Thanks to everyone who has been so helpful in answering my big bore questions.

- Vlad