Generally, yes for the same bullet weight. The only problem with a hard bullet like the Laser Cast may be leading, and that will be more a matter of sizing and lube type rather than it being cast. For years Alliant listed virtually identical loads for cast and jacketed of the same weight.
Go to:
Hodgdon - The Gun Powder People and follow the prompts to the loading data. They list HP-38 loads for, specifically, the 158 gr. Laser Cast bullet. The maximum is 5.0 gr, but at a little over 1/2 the pressure of the maximum load for a jacketed bullet of the same weight which is listed at 6.9 gr. This is not a safety issue to use the same load for both types unless a soft cast bullet is being used, and even then usually not!
THE LISTED LOAD IS FOR .357, NOT .38 SPECIAL.
Please start at the suggested starting loads and do a little (a lot!) of loading until you are totally comfortable with the process. DO NOT attempt to use maximum loads until you know what you are doing. I do compliment you for buying two books and thoroughly reading them before starting, very few do that anymore.