.500 or .577 for Next Double?

Greetings all...I’ve decided I “need” a double rifle to complete the heavy side of my gun collection. While I save up over the next year to purchase one, I have a few questions for those of you with experience with the .577 and .500 calibers. Originally, I settled on an 11 pound 500. About the same calculated recoil as a .470. However, same with many others it seems, the .577 has caught my interest.

I’ve already decided that Verney-Carron will be building my next rifle (the bone charcoal...

.500 or .577 for Next Double?