Yeah, I've pretty much been doing the same thing. Except I use the software program called quickload o my desktop computer to calculate the data for load data that can't be found published anywhere. If you give me the specifics for the bullets you use and the powders you have I can run the data in the program to see what it says. I need to know bullet weight, bullet length, case length, COAL, case capacity in terms of grains of water and barrel length.
Results will look something like this 45-70 Govt - Bullseye - 405.jpg