Hello all, lovin' my SPR310s ( with the nickel, pheasant engraved receiver!) 20 ga.. I was curious whether any of the clays folks out there shoot Estate shells with the number 9 shot? I was told by an old hand at one of the local ranges, that I should try to find shells with number 9 shot. Is there an advantage of number 9 shot over the number 7 or 8 in the Federal or Remington, or Winchester target loads out there?