Hey, I was just about to post the same question! My season is coming up soon and I think I can get something better formy 20 ga Win. 1300. Right now I just have the little turkey choke they sell for it through Cabelas, but I too am looking for an extended tube.

My dad has got the Undertaker HS on his 12 ga Win 1300 and it works really well for him so I've been looking to get one for mine. I found one at eders.com for $30, but I figured I would do a little more research and see what I can find. I guess I'll check out the other chokes mentioned and wait a little morebefore I drop the cash for one.