357 magnum firing cast bullets, what weight, and fps?

[Kryogen]

357 magnum firing cast bullets, what weight, and fps?

what weight do you cast and at what fps can you run those bullets without issues assuming mixed WW alloy?

 

[turbo_bird]

I don't cast myself, but I use 158 swc from bullet barn. I don't know what their alloy is, but they say they are 25 Brinnel. I haven't cronographed them yet, but I use 15 grains of 2400 and don't have a problem wih leading. Data from Alliant says 15.3 grains max at 1620 fps.
Kristian