To the contrary, lots of elephant available, just seems like an interesting, semi-obsolescent gun at that stage of the game, when many other NE's were available in single and double barrel configurations. Very heavy ammo, etc. Or maybe the quarry wasn't elephant at all? In the absence of the story we really don't know.

My point is I am just wondering why a fellow would have chosen this particular gun in this particular chambering. All guns have "stories" and I bet the story that goes with this one is rather interesting.