Been researching different gas pressures for my TM MWS. Usually using ASG Ultrair (beige bottle) and found this handy video comparing different gasses.
“Airsoft Mike” Youtube video shows the following (amongst others):
Nuprol 1.0 - 320fps
ASG Ultrair - 345fps
V6 - 365fps
V8 - 375fps
Nuprol 3.0 - 375fps
Obviously it will vary from platform to platform but a handy guide to, in the words of “Play Your Cards Right”, higher or lower? ?