Ther are too many variables in bullet diameters to list. Alloy is the first culprit with mfg. differences being the worst. I try to use older Ideal/Lyman moulds if that's the bullets I want. RCBS and Saeco are way more consistent, but both have some smallish diameter if the alloy isn't right. Trial and error is the rule here- try some with your alloy and mike them. More antimony will make them bigger and harder. Some undersized moulds simply have to have the bands opened up. There is a place out west that can open up a small mould and his repair work is pretty fairly priced. He also offers HP conversions and Cramer style HP work.
If you want your children to follow in your footsteps, be careful where you walk.
Beware the man that only owns one gun; he probably knows how to use it.
I just hope my ship comes in before my dock rots.