Hoppdoc
I too handled and shot your 500 at the DRSS Shoot. It is very nice, one of the nicest Merkels I have seen.

The claw mounts were well done.

I highly recommend you try some of those 440gr bullets over the same powder charge that works with the 570's as well as Nitro For Black loads with the 440's and IMR 4198.

I would not shoot that double with a scope with full power loads, but I think with loads that have less recoil it would be just the ticket for deer and pigs with a scope.