kuduae

I remember shooting a 10.75x63 on a range when I was in Germany. I don't recall what bullets my friend was loading in this cartridge but we were getting a few hangfires with it.
Another of my German friends had a nice little FN double barrel rifle in 10.75x47G. We were swaging 44cal 265gr bullets down to .423" and loading with R902 powder. We eventually got it to regulate reasonably well with 45grs of this powder but did have a few hangfires along the way.

I see COTW lists a 10.5x47R cartridge based on the old Mauser concave head designed case but it looks identical to my friends 10.75x47G so I think maybe COTW have got a typing error.

I have a few of the original RWS 347gr steel jacketed bullets which would have been the originals for the 10.75x63 and 10.75x68. These shoot fine in my 404J (10.75x73).