Hi To day I tried shooting at over 400m. I shot at 486m (531 yards), 3 shots. The weather was a little windy and the temp was +25 C. I shot in prone position only using my bipods. This was the result. The three shot group messured 4.9 inch C-C. Right now I have a Zeiss Conquest 3-9x40 Mil-Dot scope. Would I be better of with a Bushnell Elite 4200, Leupold VX-III or Weaver with higher magnification?