Cartridges of the World has some loads both Blackpowder and smokeless.
Also search the internet: I saw some loads using Unique and other powders.
I liked the loads for Unique as they dont require any filler.
I am all set to load myself except I got the 24gauge brass to cut down - I tried one cutting with a pipe-cutter but cut my first one too long and I am not sure how to trim this huge cartridge to length.



























