Rubberhead,
To bushveld's comments; I had a set of 9.3x74R barrels built for my Heym O/U combination gun and it shot better than the "acceptable" 5cm group at 100 meters. I had a scope mounted and it would no longer shoot. I hunted with it that season as a single shot and took it back for re-regulation with the scope. While in the shop, it was stolen and since I had 3 other barrel sets: I had to replace it. I had the new barrel set regulated with a scope mounted. The first two rounds at 100 meters were touching each other( they were still unfinished and I wouldn't even let them cut the regulating wedge off in finishing them). I consider bushvelds offer of help very generous and advise you to take him up on it.
Mike
