Do you mean several different cavities in one mould?.... The problem I can see with that is that these are all RG style moulds, and the cavities for the base pins are machined at the same time.... Each design uses a different RG pin, or if the same caliber at the very least a different length.... If you have never seen the way NOE makes its moulds (they have a video on their website) they make many all at the same time, with the CNC mill moving from one mould block to the next, doing the same operation over and over.... The cutters are an undersized "cherry" which is a custom made tool bit ground to the profile of the bullet, but small enough in OD to pass through the smallest bullet diameter.... That is why making small pellets is a challenge, to keep the tool from breaking.... Every bullet design starts with the production of a cherry unique to that design.... Accurate use a tiny boring bar which enters a predrilled hole in the mould block through the base, and then spirals out as it moves deeper into the hole to create the cavity.... This limits them to making .30 cal and up.... and also limits the smallest diameter to 0.060" smaller than the largest diameter.... However, it does allow them to mix cavities.... Each companies methods have strengths and weaknesses.... NOE has taken advantage of the ability to use different "RG" base pins to vary the weight and CG within each pellet design, at no additional cost.... In the first 2 moulds they produced, Al included a flat base pin to enable the caster to try a pellet with a flat base.... I don't know if that will be continued, as we never got any good feedback on the solid base pellets.... yet !!!One little trick I used on the design of the .22 cal "Target" pellet.... It uses the same cherry as the .22 cal "Hunter", but is run into the mould block 0.2 calibers further, which shortens the pellet by 0.044", and provides a wadcutter nose.... Al will be able to make both moulds with a single set of tooling.... He was quite excited about that idea.... Hmmmmmmmmmm…. I wonder if I can convince him to make a 4 cavity mould with 2 Hunters and 2 Target cavities.... Might be possible?.... Bob