I understand the frustration but want to give a different perspective. The barrels you guys are seeking (Rice, Getz, Rayl, etc.) are not "factory" barrels in my mind (only my mind, probably). Same would be true of Chambers flintlocks, etc. This is not Green Mountain or whatever, and I am not disrespecting their products. In general, believe it or not, it's one guy in a shop who knows steel and machining and loves muzzleloading. So they jumped in and are trying to make a great product, almost a custom product. Sometimes they are custom proucts. Guess what? Because they are small, they don't have a large capacity, and if they are on the phone, they are not making barrels. Should it be that way? No- and if someone wants to take it offshore, I am sure we can get Chinese barrels of every dimension and configuration of excellent quality in truckloads at a better price.
If I wanted to build "this gun" now, I'd decide to order good quality, reliable parts available now. If I really want to build a top-notch gun with top-notch parts, I try to put myself in the mindset of the colonial gunsmith. "That darn ship was supposed to sail from Liverpool in December and deliver the barrels and locks to Philadelphia by January 12. Then old Hezekiah was supposed to load his wagon and get me my order by the 18th. I bet that old cuss stopped at the Blackbird Inn and is still there drinking swill!"
I will tell you this, keep it in mind or not. If I was one of these guys who are making top-quality parts, and struggling to make deadlines, on my own in a small shop with all I could do to make a small profit, having invested everything in the business and obviously having a tough go of of it, I could probably care less what some folks were saying on the internet while I was profiling another barrel. Some of these guys are about ready to pack it in. And if/when they do, the next custom level barrel maker will be charging $350 for nice swamped barrels. And 15 years down the line, he'll be burned out too.
We are pretty confused sometimes, schizophrenic. We love the old ways and old things but want somebody to answer the phone now and the UPS truck to deliver the good on time.
Done preaching- hope you'll take it just like you do some crazy guy on the street corner hollering his message. Shake your head, laugh, and move on.