Too much emphasis is placed on choke for a couple of reasons: the load you're using may or may not pattern well with your chokes, and simply "dialing in" a different choke for any particular shot may or may not make the difference in whether or not the bird breaks. I personally know a few top shooters who use fixed choke guns and in most cases those guns are choked something like light mod/improved mod, or mod/full. They seem to be able to shoot in the 90's on a good day at a one-hundred bird shoot. Personally, I use light mod for most of my shooting. I've seen a lot of shooters twisting chokes in so often for each station that it's a wonder they don't all have carpal tunnel syndrome. At the end of the shoot it didn't seem to make much, if any difference.
