I may have this wrong, but when reconstructing canisters I spent many hrs in conversation with canister D, and saved most of his emails for info. unfortunately, I so far have not found this exact info I remember, and of course I'm not sure Davids source, but he told me when looking for lead balls for a canister, that most would be .64 which were made for army use and paper cartridge. That what you had to beware of was the navy use balls which were .67-.68 and were bigger. "think" that was because the water use made the paper swell and too hard to load. This was a year ago conversation, so I could be wrong. could ask David again if we need to
