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Hi Edosan, I have a problem with you valve seats you sent with your HP hit. The bore is not central to the OD, (0.2mm out) and the end of valve stem won't sit flush with valve body. Its like the valve want sit back far enough. It was also very very tight fit on the o ring, I damaged 4 orings...

Hi Sports shooters. I'm moving back to UK so looking to sell my lovely Impact. FX impact ST .22 Sub 12 Black. Separate complete FAC upgrade parts Kit, .25 700mm STX barrel kit Huma Reg Wika gauges, (+spare fx oem gauges) Ernest Rowe Power Kit ( 6.5mm Valve seat, c3, hammer weight) Full...

Can somebody help square me this circle please. Can somebody please explain why increasing hammer weight would aid its ability to open the valve at higher pressure. Surely the energy stored in the cocked hammer spring in constant, so the only difference between a light or heavy hammer is that...

FX IMPACT OWNERS. what velocity are you getting with 34gr king mk2s? And whats your setup (ie Barrel length, reg pressure, HST, VS.

Impact .25 700mm Jsb king mk2 34gr Factory settings yeild low fps. At 145bar i can get to 830-850. My Current settings are 165bar, VS 8.5mm, HST 17.5mm This is giving me 870fps with an SD of 2.5 and an ES of 8, very happy with accuaracy at the speed but it seems very high reg pressure...

Hopefully mr Rowe can help. As im going insane trying to fix this. I have a strange problem with my valve stem. I think it might be the valve tube quad/oring binding under pressure . Let me explain symptoms. From a fresh fill i get 10-20 ish shots at 880 fps, then the velocity sudendly...