Bought my QB78D overe here in Holland a little while ago after reading a great deal about it. Have to say that I was, and still am, very impressed by the quality of the gun and the accuracy. Ordered a sealkit from Charlie which arrived within 4 days, but to be honest, I haven't installed it yet. This gun shoots so damn well that I rather shoot it than take it apart while the weather still allows it
I did work the trigger though, took it apart, polished the contactarea's and worked on the general fitting to take the sideway play out of it (sidewayplay is not a big thing, but it bothers me) What already was a very nice trigger turned into being a sweet one easily
Been shooting it between 10 to 35 meters so far, so up to around 40 yards. Keeps POI at POA till 20 meters before it starts shifting down, and at 40 yards I can still hit 5cm/2" targets every shot if I put my mind to it but that really seems to be the limit though, but that's not bad at all. It has got a 4x32 scope on it, but I've ordered a 3-9x40 since the rifle seems up for shooting at 20+ meters.
It's got company now, bought a 2240 as well which Im currently upgrading with some fancy, but needed, kit. New grips, new breech, 14" .177 barrel. That 2240 is going to cost me the equivalant of 2 QB78's.... but hey, it's fun too.
Nice forum btw, looking forward to reading it!