I took a vacation day and took the new rifle to my club even though it was raining. We have a covered firing line that kept me dry until a squall blew in for a few minutes and got me and everything wet. But before that I got the rifle zeroed at 50 yards. Windage was dead on but it was shooting 8" - 10" low. Some trial and error with a file work on the front sight got it shooting ~2" high at 50 yards, about where I like it.
If I do my part (not always guaranteed) it looks like it'll put them within 2" - 3" at 50 yards. Load development may help that. I mostly shot .490 balls patched in .020" patches cut at the muzzle, lubed with Mr. Flintlock Patch Lube and Bore Cleaner, on top of 60 grains of 3Fg Goex black powder. I used CCI No.11 caps and in about 2 dozen shots had no ignition problems.
For the last 4 or 5 shots I used 0.018" pillow ticking lubed with neatsfoot oil. I fired these at steel gongs offhand so I can't compare how the rifle shoots with the thinner patches.
I did not have to swab until after I finished shooting. The last round loaded as easily as the first. I attribute this to the Mr. Flintlock lube but also to the hand-lapped bore. Although Track's email stated that Goodoien barrels are choked I could not feel that while loading. It's possible that this barrel was originally longer and cut down at some point, removing the choke.
I have some .495 balls that I plan to try in the rifle to see how they load and shoot.
But right now I'm happy as a clam with this purchase.