I picked up a barrel for my sako quad and have not been able to get out to the range with it yet due to work, I plan on taking it out on wed. weather permitting. It is a 18" 1:9 twist 22LR Match barrel from STS. I picked it up because STS cut me a deal I couldn't refuse on it since a customer special ordered it and then changed his mind. It was made to shoot the 60gr Aguila SSS ammo and supposedly was tested by STS and it shoots "bug holes", but I'm curious how it will shoot ammo that is more standard in weight/speed, 38-40gr stuff. I'm guessing it should shoot the subsonic stuff pretty well even with the high rpms, but curious how the bulk standard and high velocity stuff works. Anyone have a fast twist 22LR that can give me a heads up on how it does with the 40gr range standard and high velocity stuff?