I am using RCBS dies.
Bullets are .359'' as cast from wheel weights water dropped. I initially sized a few with .357'' dies, which came out at .3577''. Tried these for fit in firearm, but need them to be .356''. I purchased .356'' dies, but now the bullets are coming out at .3574''.
Next I tried air cooled wheel weights, and using the .356'' dies, bullets are measuring .3569'' diameter.
RCBS spec their molds to use linotype, or maybe that just for rifle bullets, so I think their dies would be spec'd the same, thus producing an even larger diameter bullet after sizing than the alloy I am using.
Something seems way off here. Any ideas?