That may be a factor as well, as I have heard of other models with a QLA that shoot well too. However, it seems like some have chopped off the QLA and it has improved the accuracy with conicals. I may be wrong, but I think that is the main culprit.

Especially because conicals that have a minnie ball like "bell" on the rear end like a sabot seem to shoot well (powerbelts, FPBs, and Thors). I think the "skirt" seals in the gasses better as it exits the QLA. When I shot no exuses 460 gr bullets in my Omega, I got 5 to 8 inches at 25 yards! Some went through the target sideways. Seems like that is not just rifling but gasses kicking the bullet sideways