John-
The hammer gun is a WR 16-bore double rifle (not straight-wrist though), quite a ripper.
It runs best with 5-1/2 or so drams of FFg
Relatively brisk recoil, glorious sound, and it's accurate.
Here's something with a better view of the little forend,
and a nice cape (try to ignore the 'bolt trash')
It's companion is also a WR, from 40 or 50 years later, also quite slender.
More on the 16-bore I don't think I'd try a perfect score on clays with it, but any way it goes I'm not wanting for more in the wood department at all.
I don't have anything against those who run BT forends on their guns and rifles, and I've seen a few slinky and slender ones that looked nice to me, but I just don't own a double that's not set up with a splinter forend.
Cheers
Tinker