and where the interest lies, is if I size a lead bullet for the rifle at one thousandth's over at .432 for the rifle, i am then three over for the revolver.
Not a problem...
A lot of folks run their cast bullets too small...I run cast bullets at least .002 over groove diameter as a practical minimum for accuracy and to prevent leading.
Check that all cylinder throats and forcing cone are consistent and larger than groove diameter for best accuracy. The consequences of this for accuracy should be obvious.
I don't run the same ammo in my rifles and revolvers anyway.
