The project was to design a 50cal minie that wasn't just a scaled down rifle bullet. It had to be usable in the standard "round ball" type of rifle found in most youth camps to allow for faster and safer loading while still maintaining accuracy. From my research, most of the folks who have attempted this are not "minie ball" guys and some weren't really black powder guys either.
So the test protocol. I worked with Steve Brooks at Brooks mold to cut a custom mold with an adjustable base plug so I could vary the weight. Next I got three guns together to do the test. Each gun was shot 15 times straight with no wiping between shots. Then I shot for group. First gun up is my sewerpipe on a stick AKA Schadenfreude Susie, a very battered, nondescript CVA.
Next up is a group from my Investarms flintlock, and yes it went through the same protocol as the percussion gun. The barrel on this gun is new, but the sights are rubbish, but still, the group is quite acceptable.
Overall I think we have a winner. Now to just get it in common use.