You are handycapping yourself by worring about chokes so early in sporting.For the hunting I've done in Texas IM was a very good dove choke. If you are shooting whitewings out of fruit trees in South Texas IC works great. If waterhole doves are what you get to shoot most IC works great. You can shoot a complette round of sporting at any range with any single fixed choke from cyl to xfull and do very well and many do it alot.