The old loads for the 125gr JHP bullets at 39,000 CUP or higher are no longer in the data due to "Unstable" results in testing.

Having discussed this with the S&W personnel, I was advised
that bluedot could be used but in a reduced loading where
consistent pressures were reached.
I tried their new maximum loads but found out that in my 6" revolver that the best accuracy with the new reduced loads was.............

eleven grains with a 1260 fps +/- , which makes for a nice practice load. If you want the old 1450fps loads you will need some 2400 or other powder .

Stay safe.