Yogi, if the sinkers don't work out I've got about 150 1.025" and a few dozen 1.000" balls in the garage (along with about 250 other various 4-bore bullets-you can never be too prepared!). I can throw some in a flat rate postal box if it will help your efforts.

But more importantly, post some pictures! I (and I'm sure most here) would love to see what you've built along with targets, load etc. I think flintlocks are the classiest of guns.

Bob