So with or without an RVA, this spring gives the ability to utilize 2400 psi fills and that gains you about 100 fps. while the heavier spring (because it is shorter) could get down to under 500 fps (both numbers at ~1400 psi). With both springs 1/2" out from coil bind, the Disco spring could bring the velocity down to about 650 fps. As an added benefit, you could actually adjust the lower end to a lesser velocity as well. which adds significantly to the maximum velocity and energy attained (at the expense of fewer shots per fill). Again, it allowed 2400 psi to be used instead of 2000. The same held true using an RVA (hammer spring tensioner) cranked to the maximum in a fully modded Disco. The useable number of shots (to 96% of those peaks) only fell from 25 to 22 (YMMV). the heavier spring allowed pumping to 2400 psi, and added about 100 fps in my gun (910 fps peak instead of 810). 22 cal Disco (stock valve, ports, end plug). Both springs have about the same compressed length. The heavier spring is 0.300" OD, 1.75" long and made from 0.040" wire. The Disco spring is just under 2" long and made from 0.035" wire. Shown below the trigger group on the left are a stock Disco hammer spring (bottom) and the best heavy hammer spring I have come up with above it. #BENJAMIN DISCOVERY TRIGGER UPGRADE MODS#Below is a photo of the best mods I have come up with for the Disco: rsterne is not a member on this forum, so I asked his permission to repost it here.īesides the work I have been doing to get more performance from the Discovery, I have also been working on the trigger. Here is a repost from rsterne from the Canadian Airgun Forum that I would like to share.
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