I'm assuming you mean for .40SW?
If yes then yes to follow lead bullet data or mild jacketed bullet data. Most of what I read for use of jacketed bullet data for plated is to drop it by 10%.
Hodgdon lists 5.1 as the max grains for a 165 JHP so that would seem like 5 grains to start is pretty high. I don't have any reloading manuals near me right now to check.
As per:
Basic Manual Download