Gentlemen,
and especially Lancaster,

I am sorry to report that my aquired rifle (S/N 905) from M. Lietzau is NOT in 10,75x57 caliber but in 10,75x68.

I found this out after having fired the first shot (modified case in 10,75x57) in this rifle:
the case looked rather strange afterwards!

To make a long story short, the chamber cast proved that the chamber is a (another) 10,75x68.

The previous owner said upon request that he has bought the rifle in caliber 10,75 and thought that it was a x57 because the extractor claw of the standard head size 8x57 fitted.
As it came out, the extractor was first missing and the pre-owner had only an original 8x57 extractor on stock, so the wrong one was assembled and gave the impression that the rifle must be a 10,75x57.

So, I am still looking for a 10,75x57!
Any offers are welcome (seriously)!

best regards
Rolf