I found that the key to making cartridges is to split the process up into a series of simple tasks that I can do while watching televion or listening to music, aural books, etc. I have all my components and tools in a box that I can hold in my lap.
I make paper cartridges, pretty much like everyone else, with few exceptions. Like most, I use a tapered dowel, so the cartridge splits when it's seated. I use a glue stick and zigzag papers for the convenience.
I process my cartridges in a series of batches, 50 or 60 at a time. First, I make up a batch of paper tubes while sitting and watching television.
On the next pass, I close up the breech end of the tube and glue it.
Next, I pour in the powder and glue a ball in place.
Now, off to the kitchen. I had some initial difficulties with the balls coming lose during handling, but then hit upon a solution. I melt beeswax in a double boiler consisting of a tin can in a pot of water. When the wax is molten, I dip the ball end of each cartridges up to the equator. This secures the ball in places and provides a lubricant.
Finally, I make up packets of either 5 or 6 cartridges, wrapped in tinfoil. The resultant brick is easy to handle and quite durable. I can drop them in a belt pouch without worrying about them. I don't know how waterproof they are, but they should be water resistant.
