As far as reg. pressure, 135 bar doesn't sound unreasonable for the Daystate. Unless they made major changes to the action (and they may have) the transfer port diameter from pressure tube or bottle to the HP side of the Harper Valve is very small (pencil lead diameter) compared to some other guns, and especially compared to the EDgun. When I added a Huma to my .22 Renegade, I needed to set the reg. pressure to between 135 and 140 bar to get 860 to 865 fps (30 FPE). If DS didn't change much from the older action, I doubt you'll be able to get more than 895 to 900 fps with 18.1 JSB. They may have it set to 860 to 865 fps because that happens to be the most accurate velocity with that gun/barrel combination. Also, those tiny Daystate gages are notoriously inaccurate. Consider yourself lucky that its only off 5 bar.
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