You will probably get several opinions on this.
As for me, I'd get a few of those store bought loads for defense, and
load for the gun more for practice and plinking.
The .38 Special is great for cast bullet shooting, also cuts costs
over jacketed bullets. Powders like Unique, Bullseye, and
Hodgdon's Tite Group work well. Actually, many powders work
well in the .38 Special. 125 or 158 grain lead bullets work
well for most uses.