I have one-haven't got a tin of pellets through it yet. It's growing on me, has some quirks but seems accurate so far. It's very twangy and has a very creepy trigger. I read on another forum about pulling the trigger with safety on and then releasing safety and taking the shot-this definitely makes the trigger more predictable but I'm not crazy about doing this. Mine is doing about 720 fps with JSB 8.4s and has nice metal open sights. There are a few posts on the old Yellow forum about this gun by Gubb-he is definitely 'the cheap springer whisperer' IMO!
Showed up only shot 10 rounds through it - raining out First impression - quirky but cool lil pellet rifle Scopes ordered (hammer magnum 3x9x40) Anxious to group it
Try pulling some patches-mine was dieseling a bit and fouled the bore with carbon a little. I definitely notice accuracy improved after pulling a few patches-I just used a loop of 30# mono since I don't have a crown saver that will fit the .177 first patch moistened with MP5 oil and the rest dry.
Give it some time, the rifle needs to settle in, the barrel needs to be seasoned with lead. It takes somewhere between 200 to 500 shots before the rifle becomes stable.