There is an article by Michael Macintosh in the new Shooting Sportsman magazine titled "things we could do without". Macintosh says there is no need for anything but cylinder boar in upland game shotguns except for specialized turkey guns and waterfowl guns(perhaps). He makes the point that since the inception and use of plastic shock absorbing cup wads we are shooting tighter patterns regardless of the choke since the cup wad tightens the pattern by one choke size so those shooting a modified choke are actually sending out the pattern of a full choke and thise using full chokes are now sending out the pattern of an extra full choke. That equates to having a too toght choke and a smaller pattern circle for most upland species. It is good food for thought and he makes sense. If you have a chance to read it I urge you to do so. I tried to cut and paste the story from the online mag but they intentionally don't allow that because of copy right infringements.