Reply To: Likin it so far…….Brocock Compatto .22

Forums PCP Airguns Likin it so far…….Brocock Compatto .22 Reply To: Likin it so far…….Brocock Compatto .22

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DrPutz
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Element – the problem with cutting off the factory spring is that it is too light to be un/less-loaded.  You have to increase the spring wire diameter to somewhere around 0.057″.  The factory has the original spring is preloaded quite a bit, which creates poor efficiency despite the slingshot hammer.  Once you go to a stronger spring and “negative” preload, you will be impressed at the extra speed and efficiency.  The trade off is a bit more cocking force.