There are 13 loads available at http://ammoguide.com. There is also much discussion at 8X58R Danish M89 Ammo Question - Gunboard's Forums. Some of loads on ammoguide seem warm for such an old rifle, but one fellow is shooting them in rolling block made in 1895, I think he's still alive. The ammoguide membership is low cost, well worth the money to me. Starting loads for the 8x57 at Hodgdon give the pressure and these loads would produce slightly less pressure in the higher capacity 8x58 case, good point to work up from. Sadly no 4350 loads with the 150gr bullet. Cartridge Loads - Hodgdon Reloading Data Center - data.hodgdon.com