Bird and clay shooters aren't aiming them like a rifle with a tite turkey choke.
Years back I went on an O/U quest for a turkey gun....3 Browning Citoris, (two 3" and one 3.5") a Berretta 3.5" Onyx and an American Arms 3.5".... All when aimed like a rifle shot the bottom barrel low...thrid to half pattern low.
When I contacted Browning and Beretta their rely was they were in their perimeters.
