Never tried a 177 Superstar or heard that the 177 barrel could be an issue, is it just the Superstar 177 or was it all of the BSA types of that generation it effects? Was it general varriabillity or just that they were not as inherrently accurate as the HW barrels?
Accupells & Superdomes seem to perform well. Im not sure about the mechanical design aspect of the two trigger mechanisms when you compare them to one another but the BSA's I have tried seem pretty good to me. Once set they seem to hold their adjustment & be very useable. The Rekord units always get the enthusiastic comments but from a user's point of view are they really that better?