Well, yeah--but why would a "rough" throat result in lower pressure/velocoty? Why would a smoother throat result in more velocity, which according to the laws of internal ballistics means higher pressure?
And again, am baffled about why this would only apply to "custom" barrels and not factory barrels.
I don't see where it is stated that it only happens in custom barrels. The link I posted happens to be with custom barrels. My Google searches indicate it happens to both factory and customs.
I am convinced it happened to both my Bartlein and my factory Hells Canyon.
Edit: I see where Jordan said it was more pervasive with customs. Maybe folks with customs tend to be more apt to check velocities, hand load and keep up with such things.
