Moxie;
I have old Lyman data with cast bullets from 75gr #358101 to
195gr # 358430 . Some start out at 519fps to 560fps...........
This data is so old..................
It uses the Speer 146gr and 160gr Half-Jacket for the data.
and yes the 38 special started in 1898 as a black powder load
with 18grs and increased to 21grs to improve velocity and energy.