I’ve fired exactly two rounds of .500 S&W. The first round jolted me all the way back to my shoulder and neck. I thought, “It can’t be that bad! I must have tensed up when I fired it.” So I took one more shot. It was that bad!
That was the end of any interest I might ever have in the .500.
I don’t really even much enjoy shooting full-charge .44s any more.