If you are talking about "original" 1935 performance of the cartridge there is only one way to do it. Shoot cast lubricated bullets and get a gun with 8 3/8" barrel!

Because of the higher coefficient of friction of Copper coated bullets, whether jacketed or plated makes no difference, you will lose from 100-150 FPS compared to a Lead alloy bullet. Shorten the barrel from 8 3/8" to 6" and you will lose another 75-150 FPS. Now you are down to 1325 FPS best to 1200 FPS worst velocity for a plated bullet from a 6" .357. What more do you expect to get?

Buy some 158 cast SWC bullets and load them with 15.3 gr./2400 and chronograph them. Consider whatever you get as your best velocity for your gun, because it is.