Quote Originally Posted by robs5230 View Post
The HW80 also brings its own delicacies to the party . FAC spec rifle that sends a piston the size of a modern electric car, howling down the massive diameter cylinder, compressing a volume of air that would keep a Sri Lankan pearl diver alive for a session.
I'd really expect negative preload on a .22 80 with lightweight pellets to keep under 12
Really enjoying this thread and glad that people with the know how are prepared to share openly.
Will the amount of required preload, mentioned above, be dependent on spring rate all other things being the same?
Thanks again all.

P.S. going to look up some FAP/RS whatever they are!