The general guidance tends to be to load plated bullets using lead data if you have nothing else to go by. Second rule of thumb, if you have no data for your bullet weight and type, you can work up loads using data from the next heavier bullet of the same type. So, since you have the Lyman manual, it does list loads for 120 gr. lead for 231 (see previous comment on HP38) and that would give you a starting point for the Berrys' (although the start loads could be too light to function in a pistol). Start low and work up, loading small 10-20 round batches until you get a load that functions best in your gun.
I've run through this realizing that you have good guidance already given by others, but someday my comments may come in handy with other loads.
Good luck and be safe.