I am wondering what bullet weight and velocity the factory loads in Germany were for the 8.15x46r. I have a nice stalking rifle with express sights that is shooting very high with the hand loads I have been using. I am sure the sights were regulated for a particular bullet weight and speed. The rifle was made in 1909 in excellent condition. The load i shot today doesn't seem hot it is 12.5 gr SR4759 with a 140 gr. bullet mould made by mountain moulds. I think I need a heavier bullet but would like some advise. joe g.

I found this reference:
Then RWS and DWM offered these 8.15x46R factory loads:
139 gr Tesco copper jacket flat nose, 11.6 gr Rottweil Pistol powder, for 1365 fps, pressure 1050 kg/cm²
139 gr Tesco, 28 gr R5 (Rottweil #5), for 1919 fps, 1400 kg/cm²
170 gr hard lead, 12.3 gr Troisd.target powder 1912, 1493 fps, 1500 kg/cm²
142 gr lead, 31 gr black powder, 1529 fps, 1500 kg/cm²
So in 1940 1500 kg/cm² or at copper crusher was established as the future maximum service pressure for the 8.15x46R. So the CIP max pressure is indeed 1650 bar.
Of course it was originally a black powder round so would imagine something like a 160 to 180 grain lead bullet with a case full of black and maybe a velocity of 1250 to 1450 or so. Is your rifle marked with the proof bullet weight?

RWS factory load was a 151 gr. bullet at 1805 fps with 1090 energy.

I want to thank all who responded. I will be loading up several different bullet weights to give them a try. I currently have a couple bullets .319 and several bullets for the 32-40 from Saeco Hoch Lyman and the mountain mould. I might have to buy a stop ring mould but really would rather not spend the money if I don't have to. One of the moulds i have should shoot low enough, i don't care how fast it is going as long as it will penetrate one sheet of paper at 100 yards.