I get MY cast bullets from my garage! Fire up the pot and go for it. Customer service is tolerable as long as the wife keeps the coffee coming and I don't burn myself! I always get what I want when I want for the price I want. No shipping or handling either!
The softest lead bullets available today though aren't cast, their swaged. Speer used to be the leader in that area. Like Archangel said, TVB is where I would start if I couldn't go to the garage!