Crusader,

that's an interesting piece, thanks for showing it!
It's not an elephant rifle.
Actually I see a target rifle from Bavaria.
The maker's name I can't read, but "IN MÜNCH..", possibly in München / Munich.

ON the breech block "K. B. PRIVILEGIRT", meaning "Königlich bayrisch privilegiert",
a shooting club privileged by the royal bavarian court.

Maybe it is this club, still active: http://www.hauptschuetzen.eu/
Maybe another one.

No idea what targets where shot at. The piece might also have been intended as "Wallbüchse", for long-range sniping when defending the city walls.
This was the purpose of those old-time shooting clubs, and that's why they often were "privileged" - supported by the king or the city. But I wonder if that concept of city defense was still alive in 1844.

Regards,
Fuhrmann