So, I assume you are reloading .38 Spec. cases not .357 mag. cases correct?
If so, I have a nice load for you, if interested.
Also I would hold off a bit on the boolit casting until you consider yourself and an experienced reloader.
Once you are extremely comfortable reloading a few calibers...then see which calibers and firearms you enjoy shooting the most,
then dive into the casting.
Good Luck and Enjoy!