If you are casting minies get the absolute largest pot you can afford or allow time for the pot to come back up to temp after adding lead during your casting sessions. A pound doesn't go far. My wife and I use a vintage Lyman dipper, the old "egg", but I drilled out the spout to get a faster pour. Actually I had drilled it out 40 or so years back when I started casting for my Brown Bess. You might think about opening up the sprue plate slightly too, use a countersink and dress the bottom side on a stone to remove any burrs. If it doesn't work all the mold parts are available from Lee and aren't expensive. I have never checked but wouldn't be surprised to find they use the same plate for all their molds.