Just as a fun little side project , I'm trying to make Shotgun Slugs work in a smoothbore Musket. For those unfamiliar with the Nessler Ball, a brief history is that these were bullets, similar to later shotgun slugs, developed to increase the range of smoothbore Muskets during the Crimean War. Unearthed actual Nessler balls. I'm trying these next, they look most similar to a Nessler. I tried firing these .660 16 gauge slugs. In brief, the .660 slugs in the paper patch worked well for about 3 shots , then the skirts would tear off. I think the skirts were too thin, and after a little fouling the drag in the bore broke the slug up. I think even 60 grains of 2f was too much. No good, I can maybe try mouse fart 30 grain loads just to use them up next time. The 12 gauge .678 slugs look beefier, and may hold up. I'm not above trying American Pioneer or Pyrodex, but would like to stay with the real Holy Black. Any advice? Anyone tried this before?