I shoot my homemade BP at 5oz which currently propels a circa 3" lead ball relatively flat at 500 yds. [might be further, I just don't like the walk!] Oh, from a cannon of course. I make a bag for the charge out of this backing material that my wife uses in sewing things. [I should tell her one of these days...] It holds well and frays with ease and works rather well. However, there have been a couple of times of hang fire. I believe I have '"pricked" the bag well and suspect the material may be bunching in just the wrong spot. I think what I'd like to end up with would be the charge and ball as a single unit. Kind of a Swab-n-Go for us poor cannon folk without breach loaders. Still cold and frozen here. At least its not mud until the afternoon. They otta rename this place purgatory.