I recently acquired a 13 cubic feet updraft kiln. It has 8 MR750 Venturi burners that initially ran on natural gas. I'm replacing the orifice size for propane.
I'm clueless as to how much gas this will consume for cone 6 or ideally cone 10.
Does anyone have experience or knowledge if two 100 pound cylinders linked together would be adequate, without freezing up with this puppy?
Seems to be a shortage of 250 pound tanks in this area (central FL).
I did read efficiency drops on a greater psi of the gas for these burners. So I would like to keep it low. 1 psi was 77,000 plus btu’s per burner.
Thank you for the discussion. 
Followed the email list in the 90’s and beyond, even stopped in the NCECA room cup exchange one year…

From Zen and the Art of Motorcycle Maintenance
"You see things vacationing on a motorcycle in a way that is completely different from any other. In a car you're always in a compartment, and because you're used to it you don't realize that through that car window everything you see is just more TV. You're a passive observer and it is all moving by you boringly in a frame. On a cycle the frame is gone. You're completely in contact with it all. Your in the scene, not just watching it anymore, and the sense of presence is overwhelming. That concrete whizzing by five inches below your foot is the real thing, the same stuff you walk on, it's right there, so blurred you cant't focus on it, yet you can put your foot down and touch it anytime, and the whole thing, the whole experience, is never removed from immediate consciousness."