Hornady app says to use 38 special data for loading cast bullets for 357 magnum.
In the Hornady app says IMR 700X should use 1.9 to 2.8 grains.
Lee book says IMR 700X should use 3.1 to 3.5 grains for 38 special.
Lee book says IMR 700X should use 3.0 to 3.0 (yes the same) for 148 grain wad cutters in .357
I find this confusing.