Try looking at Lymans 357 mag wadcutter data. Formidable! The old data was developed before the 357 was neutered because it was hard on guns that weren't designed for it. J&K frames come to mind, plus revolvers from metalurgically unsophisticated overseas manufacturers. Full charge means that it is not reduced velocity "target" ammo, and that data was developed for use with solid wadcutters, not the much more fragile hollowbase target bullet. Ed's solid 38 wadcutter data should be considered "+P", and used with the same considerations. Alliant shows 3.9 gr of Bullseye as a +P load with a Speer swaged SWC.
I now regret sharing this information. I would not have done it if I had any idea that it would be used for attacks against Ed Harris, who I hold in high esteem. I would delete it but it doesn't appear to be possible.