Thank you all for the inputs. I fill at garage temp. which is 72-77 degrees here in San Diego and 800 psi charge pressure from the tank. It takes less than 20 grams of gas in the six inch compression tube.
Yes it does vent off gas when full,yes I have replaced the valve stem and all seals and springs.
I'am not interested in the number of shots just want to get the CR115/116 working again. I can charge the following airguns on my bulk fill system without any problems CR113,115,116
Thank you, Dave