Originally Posted by AnXiEtYxBeAsT
Same here I bought my ion off of a guy and it doesn't shoot above 190 fps ... When I turn the velocity up it starts to not shoot ... But if it is up a little but like around 200 fps I pull the trigger and can hear a little puff then after a couple of trigger pulls it starts firing normally... But set it up higher than 200 and it won't shoot at all... I always thought its the regulator..
Make sure you're underboring and that you don't raise the pressure past 200psi