Myth: "Using up the gas pressure in the Mag will make it last longer somehow"
Correction: You SHOULD EXPEL the rest of the gas from the button with your plastic plate (or finger nail) by TIPPING the magazine upside down DOING THIS, BECAUSE the silicone oil WILL lubricate the button seal this way by exiting through the button.....HOWEVER,..
Always REPLACE and STORE IT That Way with at least 2 seconds worth of gas/ silicone.
WHY? For the same reason you dont drive down the road with your engine cover off your truck "stupid" ...IT RUINS THE SEALS, CORRODES, CONTAMINATES!! Helllo?
Think of it this way, If the gas isnt "trapped" in there..something else will be free to enter the valve button.