What is the difference, functionally that is, between plated bullets like the Raniers and Berrys vs. jacketed bullets
I believe the idea is that you can theoretically
drive the cast bullets faster (or as fast) as the jacketed w/o leading.
I only used plated bullets once, and the results were less than successful; I doubt if I will ever use them again. I just cast my own and heat treat the bullets; that in and of itself helps reduce leading alot. To be fair, the plating job didn't appear to be the best (some 160 grain SWC .358 bullets).
My suggestion would be to try a small amount initially and see if that gets you where you need to be.....if not, maybe look at buying some gas checked bullets or go to the jacketed. I must say that over the years I have gone to pretty much lead bullets (that I cast myself) for 50% to 90% of my shooting (depending on caliber & cartridge) and they have worked just fine.
As far as loading, for plated bullets I would start with standard lead bullet data and go up in small increments from there. I think your biggest issue will be with leading & accuracy, not so much with pressure.