I just finished a TVM in 20 gage. I had the barrel jug choked full ...supposed to be good to 40 yards. I'll start working a load up soon. Cost me around 500 bucks for the kit. Track of the Wolf is a good place to start looking for parts. The only problem is alot of the things I'd like to get for my next project are on back order.
Dixon's sells smootbore barrels, locks and triggers are the same for all flintlocks. Chambers Colonial or early Ketland is a good choice, Chuck sells both. He has butt plates and trigger guards. I just bought wads and shot from him. Except for the stock, what else do you need. Dave Keck and Fred Miller both have fowler patterns.
I was speaking with Greg a few weeks ago and I told him that the kit I ordered from Chambers in November has not arrived yet. All I have is the barrel and breach plug. Anyhow, I am on the verge of canceling the remainder of the order and building a gun with the parts I can get from Dixon's. I hate to do this, but I have been waiting almost 5 months for the stock and lock (and furniture) from Chambers. It's a swamped Rice Barrel and apparently Greg does not have stocks that would work on them. I believe he mentioned Dave as possible source though. Problem is, this is my first build and I need all the advantages I can get. Then again, something in my head is saying to go for it. Make sure you are right, then go ahead. Sound familiar?
You may want to check out Brad Emig (Cabin Creek Muzzleloaders). He has a great looking and shooting smoothbore flint fowler that he builds. It should be available in a finished rifle,in the white or a kit gun. He is not that far from Snyder Co. Just "down the river" in Hellam.