Which spring to use for gamo CFX to get max power . 16 to 18 foot pounds
Ho - Hum , When will they ever learn.
Seriously don't waste your time and money on this futile project , it won't work.
Hey you asked for advice.
Why 16 - 18 fpe? What are you planning on doing with 18 fpe that you can't do with 12 - 14fpe?