Lyman 37582 loads

[reddhawkk]

Anyone have a favorite load for the .38/55 or .375 Winchester using the Lyman 37582 mold?

[farmbif]

I don't have experience with 37582 but basically fill the case with 4198 or 1680, because it seats so deeply compared to 200 gr or 220 gr jacketed bullets. that's been my experience.
I asked techs at western powder for data using cast in 375 wi with 1680 and they said, forgive me if memory incorrect, I think it might have been 30-34 grains. it took up too much space bullet would not seat deep enough. I think I ended up at like 26 grains.
ive got both later Lyman molds 375248 and 375449 and both shoot well with like 25 grains imr4198