The 1904 DWM catalog shows lead bullets for 11 to 11.20 mm weighing between 19 and 25 grams.
I have loaded for an Austrian cape gun in 11,2x51R Kropatschek-Heissig (basically a shortened 11.15x60R Mauser), good success with around 300 grain bullets.
With the rifle I inherited a good supply of 11,15 mm lead bullets cast from an original mold, weight around 295 grains. These worked well.
The bore of this rifle is quite tight, groove diameter around 10.9 mm. So it was possible to use 300 grain jacketed bullets for the .44 Magnum. These worked well too.
Powders used were Swiss black powder and SR4759, velocity around 400 to 420 m/s
fuhrmann
