It's been a while since I finished this rifle and posted on here but I had it out this weekend so I figured I would share the shooting video.
Slow motion during the shot:
Regular speed:
This is a .54 caliber kit from Jim Chambers and I was using 60 grains FFFg in the barrel and FFFFg in the pan. I'm using .530" balls with 0.020 patches. I was shooting at 100 yards which was further than I wanted to shoot for sighting but I got the windage pretty good as I finished with a 3 shot group about the size of a paper plate. Seems reasonable given that 100 yards looks like an awful long distance with open sights.
When I finished this, I was worried that my touch hole was a bit too high but it seems like it fires pretty well as it is.