My 05 WGP Superstock sniper had problems with hammer bounce. I have a couple of spring kits, Maddman and Nelson, but the thought of spending time, air, and paint at the chrono in the hot sun trying different spring and and reg settings was not appealing to me at all. After checking out Demonio's SS-25 at his house one night, I decided to skip all the headaches and pick up the CCM kit.
The kit came with no instructions, but this was not the first time I removed and installed valves. The only thing I was unsure of was which way the the valve alignment nut faced the valve, because it was machined differently on each side. One side looked like it was machined to help a valve tool slip into the socket, so I had that face away from the valve.
The feel of the valve kit in the Superstock was just like how Demonio's SS-25 felt: Solid hammer strike, no bounce. Pump stroke was significantly lighter and smoother. Velocity adjustment is also much more convenient. No more unscrewing of the cocking rod. The hammer also contains an o-ring where the cocking rod screws in, which helps to keep it from backing out during play.
On the field, with reg set at 300 psi, I achieved 280 fps with the IVG approximately 3 turns in.
Below are pictures comparing the 05 Superstock stock internals to the CCM:
WGP Internals Top; CCM Internals Bottom
