Quote Originally Posted by Eventorizon View Post
I was going to say, 20oz are much bigger. 12oz should be enough. I have also figured out how to use the gas used to fire the cylinder to reset it without any extra gas.
Yep, no need for 20 oz tank, I use 12 oz tanks both for main and buffer with a 63 x 73mm ram, and it works well... but tbh, the there's not much of a difference in size between the 12 and 20 oz tanks.