Buzz, no problem on my side. It's an interesting topic to debate. And no matter how your gun is choked, one should always shoot some patterns (at ranges where you expect to shoot most of your birds) to see how a particular choke-load combination works out.
At 15 yards, the cyl pattern from my Sauer 20ga had a 22" diameter. The pattern from the "tight" barrel (IC, .007) had a diameter of 18". If you compute the area of those two pattern circles, you'll find that the open one covers almost exactly 50% more than the tighter one. The real eye-opener was the tight IC choke out of my Ithaca Classic Doubles 20ga (.009, 14" spread) versus a Polywad Spred-R through the same barrel: 21" spread.
For birds that offer a lot of really close shots, I don't object to a little choke. But I think it needs to be darned little. And even on pheasants, if you're in good ringneck country and have a decent dog, I don't think you need a lot. (Particularly true if you're shooting a DT double, because you can always leave more choke in that one, and select it instantly if required.) I have not used a gun with one barrel bored cylinder on very many roosters, but I've shot piles of them through 12's choked right around .005 in the R barrel.
