Weatherby Rifles chambered in Weatherby Calibers all have feebore. It's not because of the 220 bullet. The freebore allows you to loaded hotter loads. The freebore helps the gasses escape which then reduces the pressure which then gives the higher velocity that Weatherby is known for. I can't speak for the Vanguard but I know the Mark V is an accuate rifle.Maybe you were unfortunate andgot a lemon. Everyone has produced Lemons somewhere along the line weather its Weatherby, Remington, Ford or Chevy. One bad rifle doesn't make them all bad.It might put a sour taste in your mouth though!!