Hi Buckstix,

Nice find. I have a 1930 Mauser Model B in 10.75x68. I have new Horneber and Bertram cases and neither will chamber without running them through a 'C-H Tool & Die/4-D Custom Die Co' resizing die. If you don't resize new brass before loading, you should try chambering and closing the bolt on an empty case before loading them.

Here's some links to loading data to get you started.

http://www.24hourcampfire.com/ubbthreads...eat_littlel_big

http://www.reloadersnest.com/detail_request.asp?CaliberID=284&LoadID=203

This one will cost you money to see the data.
http://www.loaddata.com/members/search_d...;header=10.75mm Caliber Reloading Data