Wow, I'm not sure where some of you guys get the idea thatsporting clays won't help in the field. I can still recall my first two dove hunting weekends. I had been shooting trap for quite a whileprior to my first dove hunt at a co-workers ranch in Southwest Texas. That first hunt, it took me about two boxes of shells to nail my limit of 8 birds a day. I spent the next year shooting sporting clays every weekend. Sometimes both Saturday and Sunday. The next year, I'd nail my 8 bird limit with a half a box. I've shot hundreds and hundreds of rounds of clays. Tens of thousands of targets. I think sporting clays is a great simulation of hunting. But, it simulates a lot of different scenarios, and isn't as limited as trap, which is all outgoing shots or skeet, which is predominantly crossing shots. Sporting clays gives you a lot more angles and variations, different target sizes, even rabbit targets that roll and jump across the ground. Give it a try, and I guarantee you'll have a LOT of fun and it absolutely WILL help you in the field.

Edit: Sorry... In answer to your question, you can usually leave your full choke at home when shooting clays. Modified is generally plenty tight for the targets you'll see. If you've got an Improved Cylinder, you might want to take that along as well.