I bought a Dreamline Classic and the “Lite” conversion with bottle adapter largely relying on reviews such as this. My ES and SD as measured by the FX Chronograph is 2- 4 times more than I’ve seen in the reviews. After spending 3 weeks at FX USA, they tuned the gun and told me they were seeing ES of 10 FPS or less. Upon receipt of the rifle and not changing their tune, my ES over 221 shots is 58 with SD’s of 13.9, 8.3,5.5, and 7.5.
FX USA has not even bothered to respond to my email that detailed my results in an excel SS with shot by shot data. I wish I could reconcile the reviews with my results, but I really wish FX would respond.