Try RL15 and 250 grains AccuBond combo. It works great in most rifles. If you want a 285 grainer, then, go to PPU as they're cheap. Same powder works great, so does BLC (2), Varget, H-335, H-380, H/IMR 4895 and on and on... A powder / bullet that works is not hard to find in that caliber. Be careful with internet loads as the M/94/96/38 magzine is short and you will have to seat the bullet deeper into the case.
If you're new to it my best suggestion is to get the Hodgdon load datas center or to get yourself a up-to-date relaoding manual (say, from the manufacturer of the bullets you want to use).