It is hard to tell which choke to use, it depends on the load that you intend to use. I shoot hevi-shot and it cannot be shot out of an extra full choke, much the same as steel. I am a firm believer in hevi-shot, having taken a fall gobbler at a measured 72 yards. I am trying (in vain) to find a hevi-shot choke for the new SBE II. Have the gun on order, but I am told that the threading has changed and that the new choke tubes are criogenically treated like the barrel, so I am going to have to go back to lead if I get the gun in time for this springs's hunt. Anyways back on topic. The only thing you can do is to try different chokes and ammo, it gets expensive, but it is less expensive than missing a longbeard because of a mis-matched ammo choke setup. My dad uses a comp-n-choke and has had very good luck with it, also try briley, they make the extra full turkey choke for Benelli, at lest according to the catalog they do.