Jon,
You can have Accurate molds make you a mold for whatever conical you want. From what I've heard, they are a really nice mold. The problem is if you are going with a bullet under 350 grains it is going to get to be a bit on the short side for a 1 in 28 twist.
I am going to get a mold from them in the not too distant future. I am trying to decide if I want to go with the iron blocks or the brass.
Art