I like post-em-notes too...wrap them around something that will give you a finished product just under bore size...but big enough that you still have to ram the cartridge down even with a clean barrel...with a clean barrel, my first cartridge will slide down with the weight of the ram-rod on it...but not by it's self. (steel musket ram-rod...your results may vary with a wooden RR)
I kind of "star-crimp" the bottom of the cartridge, and glue it shut with white glue. Then after putting in the shot I just fold the left over empty tube flat, and over, and glue it down with a small spot of glue. You just have to experiment with how much tube to have left over after the shot is in. I have found no need for over-powder or over shot wads, when making grouse loads. For my Turkey loads I do use a cushion wad under the shot-cartridge.
In my gun, 11 guage, with 100 to 110 grains of Swiss, the paper completely disintegrates...very hard to find any remaining pieces even on bare, flat ground!! Pieces I do find are never burnt though...just totally mutilated.
Sure makes for good bird hunting. Pull out a paper powder cartridge...tear off the end and pour the powder in...then grab a shot cartridge and just ram it down...(although I usually add a wonder wad...unless the birds are flushing hot and heavy under my feet!) prime the pan and you are ready to go again.
The first load also pulls real easy if you want to unload the gun without getting her dirty.
Rat