I love RCBS molds but the one downside is that they only come in 2 cavity versions.
I like iron molds and don't mind the extra work to protect them from rust. In the Saeco line, the price difference between 3 cavity and 4 cavity molds is slight. A 3 cavity mold would produce significantly more bullets in a session than a 2 cavity mold but at almost twice the cost of a 2 cavity. It's a one time expense and an expense than would be amortized over a long mold life.
A 4 cavity mold is only slightly more expensive than a 3 and It would produce even more bullets per session but there's the weight penalty.
Any thoughts or experience concerning 3 vs. 4 cavity iron molds?