I see that Accurate cuts up to five cavity molds and will cut each cavity with a different design.
Because of some caliber overlap, one of their molds could be had to feed anything in which I shoot or plan to shoot cast with every pour. The 35 and 9.3 would have to be of distinctive designs, or I might have to measure each; and the 7 would need to be heavy to keep its mass somewhat near the others. But, this might actually work.