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I first threw a nice tall (but mostly cylindrical) pot out of 14 lbs of Dove porcelain. There was not so much grog in that stuff so I had a hard time with it wanting to flop over at the rim... so I figured that I would try again with a denser clay.
I switched to 16 lbs of CKK6 (with grog) and after a marathon of centering, I pulled up a nice tall cylinder about as tall as it was wide (maybe 10" at the base?) Then I used a nice tall rib to compress and normalize the walls. Then (using an 10" board as a stupidly long rib) I gently leaned the walls out to create the bowl shape. In a week or so when it gets 'leather' hard I will trim out a drain and carve a nice looking foot to hide the pipe.
This is by far the largest thing I have ever thrown and with a little luck, it will survive the trim and make it to the kiln without getting too screwed up. I don't know... it's a pretty full class at the community center this term any anything can happen in the next two weeks. Wish me luck!