Well, I found a place in Tucson that has 0.480" round ball. I'll pick them up Saturday morning. I have my flints now as well. All I need to do it to repair the stripped thread and silver solder the guide back in place. I'll take care of the guide either this evening or tomorrow. Fun time ahead.
BTW - my oldest is helping me format and upload the videos of the test fire. So hopefully we'll have some more to look at in the next couple of days.
I can report that the pistol is 100% accurate at the range it was intended to be shot. Assuming that the intended range was point blank and actually touching the intended target. At less than 10' I was feet off of where I thought it would hit the target. But without sights and that big honking cock in the way, I don't know that it was intended to be shot at more than 5 foot.
So, not very often a slug like me can contradict a well considered gun guru. Although Mr. Townsend Whelend may have been correct that only accurate rifles are interesting, I can say without a doubt that a pistol doesn't have to be accurate to be interesting.