Found a guy on the internet who used .44-40 cases loaded with "about" 1/3 oz. of 7s in a .44 Magnum plastic shot cap in a Stevens like mine.

Patterns were nothing to write home about but adequate for potting small game, which is, I think, the whole point of the .44 XL Shot ctg. unless you have a true "plague of serpents."

(Of course back in the days it was created ANY serpent was considered a "plague"!).