The quoted proofmarks point to a 9.3x72 R. 118,35 is the old gauge number for a barrel with a bore/land (not groove or bullet!) diameter up to .350”. so the gun was proofed pre-1912. It was proofed for a service charge of 2.7 gramm = 42 gr GBP = smokeless rifle flake powder. This was the contemporary smokeless load for the 9.3x72R with a 196 gr copper jacket bullet at 2020 fps. The 9.3x74R charge would be 3.5g = 54 gr. The case diameter, larger than .223 but smaller than .308, speaks for the x72R too. The scope mount bases, Albert Wilhelm Triebel’s variation of a claw mount, were added in the 1920s – 30s.