I purchased a professional in 280 AI I Oct. After 2 boxes of factory ammo with less than moa results. It went back to the factory the first part of Nov. I called LAW in late Dec to follow up and was told that the bedding blocks had been honed out, the firing pin replaced, and the action bedded (iirc, that was everything). It was in line for a new crown to be cut then. Last week, my dealer got word that it was waiting to be test fired and would ship back to us in a week or two. I plan to post results after the first chance I have to shoot it.