I use and like 2 20 pound adjustable temp Lee Pots. I use one for hard rifle & pistol/revolver alloys and one for pure lead round balls and black powder rifle bullets.
I converted both for dipping. They were both bottom pour pots, which I didn't like due to the constant dripping.
I used an impact driver and #6 self-tapping sheet metal screws to plug the bottom pouring holes from the inside.