You guys that are (were) clamoring to know the manufacturer are missing the point of the thread.
As I read his post ghostman is looking to increase his knowledgebase by asking what would cause a 3' group at 50 yards (just to be clear, this an actual, measured, "group"? How many rounds? Pictures of the target?).
GM, since you said it's a 14.5" we can assume pinned muzzle device as well? So there's no real way for you to inspect the crown? If so, I wonder if the drill press didn't get ahead of someone and the pin got inserted too deep (yes, I know the press should have a stop on it to prevent this) or the crown somehow got damaged in the process.
Just chalk it up to chaos theory, or so I'm told. :sarcastic:

