I've always been enamored with the possibility of owning a double rifle, specifically a Krieghoff or Blaser in 500/416NE. I believe it would be a perfect combination of performance and shootability for a traveling hunter. The only real down side I see is the price of ammo or having to reload.
As far as ballistics go, it's my understanding that the 500/416NE was made to replicate the performance of 416RIGBY. With the exception that the NE would have the advantage of a rim for proper use in a double rifle.
My question is of recoil impulse. How does the 500/416NE feel to those that have shot it vs the 416RIGBY or any other cartridge for that matter? From what I hear it's akin to a 470NE, but what the hell do I know?