Powder charge tubes? Meh. Just a bunch more things to clutter up your shooting bag. Get a horn and a powder measure, it's not that much slower to load with - especially after you've mastered it.
I have used for lots of years, powder in a paper coin stacking tube. For my load a penny wrapper, folded twice on the end and glued, when dry loaded with powder and then folded twice and glued again. Hold in place using a close pin, while drying. School glue works great. I keep several in a small zip lock bag, and one in my shirt pocket. Simply tear off the end a pour the powder in. Easy as hell even under stress. miles
