The agreement is pretty general - you can use data for cast lead bullets just about the same for plated. Whether it is a RN or HP would make no difference
The last word of caution is that driving your plated bullets much over 1200 fps will increase the likelihood of their shedding plating material in the bore.
Obstructed bores are not a good thing.
Joe Hatleys suggested load:
Maximum Load Gr. FPS P.S.I.
Alliant Unique 5.3 1092 27,100
is a MAXIMUM load - start lower and work up carefully - but it should work alright.
I have found decent accuracy and pressures in 9mm with both Accurate #5 and Hodgdon's Titegroup.
Flash