Steve,

Hey, thanks for the above post. Glad you are trying to load for yours. I have not had mine for about 8 months as it is at my gunsmiths getting a set of new springs.

Per the load, Steve Meyer, read awesome guy, of the GGCA emailed me with the following data:

-The 11,15x65R (also noted as 11,15x65,4R) cartridge is an elongated version of the German military 11,15x60R (.43) Mauser round. The .43 Mauser spawned dozens of sporting cartridges of various calibers and lengths and the 65mm version was fairly popular.

-The 62/78 indicates the gauge of the rifle barrel and is usually all that's seen to give any clue as to the chambering - having the explicit "patr(one)" (cartridge) mark is rare. Still, a chamber cast wouldn't hurt. 62.78 gauge translates into .420", which would be the largest diameter rod, in .010" increments, that would fit in the bore. Groove diameter of your rifle barrel will probably be somewhere between .440-.448"

-It was loaded with black powder (SP = schwartze pulver) and the bullet weight was 17,7 grams (about 273 grains) and plain lead (BL = Blei, or lead).

Hope this helps. Let me know if you find a good load and how it works!

Enjoy,

KC