I had the chance to fire a ported 500 at the range. It was a factory load,
but wasn't bad at all. My current " big revolver" is a SRH in .44 mag. I foolishly traded off a SRH in.480 Ruger, it wasn't bad at all. I had an Encore pistol in 30-06 which I kept for a year or two, traded that barrel for a .22-.250, didn't keep it long, and then traded for a .454. That was too much for me. I ended up selling it, the scope, dies and brass to a friend who wanted it.
Even in my old and decrepit age the ported 500 wasn't even close to being as vicious as the .454