Tom-
Not a problem, I use a #30 for cast iron.
Brim full I think is around 100 lbs. of iron.
I will probably try and pour around 60 lbs. this time, and fill three of those molds.
I have a pouring cart almost finished.
I have hand poured with the #30, but it is a bit of a bear to handle, and for this much metal, I will be using the cart.
I saw a commercial cart online several years ago, which is where I got the idea, but I noticed that ironman uses a similar cart with great success.