Bought an 870 with a Poly-Choke and it hit over a foot low when I patterned it. The bead sat on a pedestal, and I ended up replacing the barrel (with a 26 inch improved cylinder). I have a 20 gauge Mossberg pump with their version and absolutely love it. It hammers pheasants and I have lost count of the straights I have shot with it on the skeet field.
