WCH, yep, you got it, lighter loads (as in 38Spl in .357 Mag cases and 44Spl in 44Mag) work fine. If you dont want to change a powder measure setting, etc, just load the longer case with the same charge, but 1/2gr. more charge worked for me. You can use the Spl die set too on the longer cases, but will need to adjust the seater/crimp.