If the manufacturer can't help with load data for the powders you have , you might want to get a pound of Unique. Can be used in a lot of different loadings besides shot capsules. In the 44 special , cast bullets and Unique are made for each other. For years Unique was the only powder I used in loading for 6 different pistols ( both cast and jacketed bullets ) and cast bullets in 3 rifles. I finally broke down and got some Bullseye and Red Dot for light target loads cause Unique doesn't like to be lightly loaded, needs a certian amount of pressure to burn completely. I am sure you can find a use for it, older powder with lots of available data.
gary