I bought a Carlsons .650 extended choke and a Carlsons .650 Longbeard XR ported one. I have pattern tested today and they both shoot Federal 3" #5 turkey thug shells very similarly. That being said - the regular extended choke definitely has a slightly better pattern at 20 and 40 yards. I'm going to shoot some Magblends and some Federal Heavyweight #7 shells through them both to see if they pattern any better.