|
As said, cut off a coil or half a coil at a time, reassemble and chrony. But if you cut off too many coils, your spring will end up too short and you'll have to buy a new one (not that much, $25 or so). I cut my Laylax 170SP spring down (was getting about 585fps) and with tweaking other parts now have my rifle sitting at 400fps and love it. Went many years running it at around 500fps, and had tried 430-440fps, best I've seen is the state it's in now.
|