I got a quote from green Mountain to have a run of barrels made. Minimum order quantity is 100pcs. They would be 12.250 long and turned between centers to .500 diameter. Price is $34.50 each plus freight for the order and shipping to everyone.
I did not ask about them shipping directly to everyone but I’m sure that could be arranged.
If anyone is interested in ordering some post in this thread. I would take 10 so still looking for another 90. Recently I found a good deal on eBay for some used barrels but given the price and the labor for cutting and turning them down these are not that expensive given they would come ready for the final installation machine work.