I bought a Montefeltro 12 to replace a 1100 20. The 1100 has a 26" barrel and improved cylinder I hit three birds with one shot at about 20 yards over my springer at a pheasant farm. I wanted a tighter patter for longer shots at public land pheasant and changed the 12 with a 28" barrel to full. I was shooting 6's. I went back to the pheasant farm and did not hit four pheasants with three shots each, same dog and the same distance. I am thinking I need to open the pattern up eaithe a modified or improved.