All Weatherby® Mark V​® rifles and Vanguard​® ​Series 2 ​rifles are guaranteed to shoot a .99″ or better 3-shot group at 100 yards from a cold barrel when used with premium (non-Weatherby calibers) or Weatherby factory ammunition. Together, the Weatherby system (premium ammunition and rifle) forms the flattest shooting, hardest hitting, most accurate combination in the industry today.
If it don't send it back!
Now if it is being bought used I would carry to range first before handing over any money.