I have an RTIC 64 ounces bottle that is food grade stainless steel, double wall insulated, and has a heavy duty screw on top with a gasket. Has anyone tried to bottle with one of these? My questions if so would be how much headspace and did the top hold up to the pressure? Both companies customer service was at a loss to whether or not they would hold pressure. I would hate to lose half a gallon on a trial, and potentially the container.