Tony, I think I commented before on the Gamo I acquired, it shot okay, once you got used to the trigger. I think there might be an M3 screw that gives some trigger adjustment and it might be possible to add a slightly longer screw to improve things. I had similar accuracy results to you, 3/4" groups at 15mtrs weren't too shabby (JSB exacts 15.9gn). A lube and polished definitely helped. I swapped it for my FWB300s eventually