As 31088 was originally built for Nash, it was an HE-grade with XE stock and forearm and XE engraving.
31088 14 Production Card.jpg
Note that the card states, "Chamber 3" Shell for #4 Chilled Shot." Western Cartridge Co. didn't introduce the Lubaloy shot until two years after Bo Whoop was built. This is the shell 31088 would have been targeted with --
Super-X 12-gauge, 3-inch, RECORD, #4 Chilled 01.jpg
Super-X 12-gauge, 3-inch, RECORD, #4 Chilled 02.jpg
Super-X 12-gauge, 3-inch, RECORD, #4 Chilled 03.jpg
Bo Whoop was pictured in its original state in the Derrydale edition of
Ole Miss.
The Author's ten-pound Becker Magnums.jpg
In this picture it appears to be in its original A.H. Fox Gun Co. livery with the black forearm tip missing.
Nash with BoWhoop, ebony inlay missing.jpg
My supposition is that Nash had Becker restock 31088 to match his Henry Bartolomew gun the lower one in the picture above. In this picture it sports a Becker forearm and stock --
Nash with BoWhoop, with ivory inlay.jpg
likely the now broken stock.
As for the "ten Pound" that is a big problem with Nash Buckingham writing that he never allowed exact facts to get in the way of a good story,