Quote Originally Posted by S Hebby View Post
My Silver Star 0.177 was desieling every couple of shots. Fitted TBT kit today and it's totally transformed it. I totally cleaned away all the original grease from the inside of the cylinder and piston. I removed 2 coils from the spring then retrimmed and ground where I'd removed the coils. Lightly greased (with the TBT grease supplied) the back of the piston and spring and re-built using the TBT kit. The pistol is now easier to cock and shoots with less recoil and no dieseling. Chronoed at 514 fps (4.95 ft/lbs) using JSB Exact 8.44 grains. Variation of 4 fps over 20 shots. Accuracy at 10 yards is now on a par with my recoiless FAS 6004.
Just now tested over chrono again. First shot desieled and read 557 fps then settled to around 515 fps for next 20 shots with no more dieseling shots.