Too many variables to give an answer. I have 3, 9mm pistols that have grove diameters from .356" to .358". I shoot cast bullets of .357" to .359" diameter. Case wall thickness is another variable; thick cases and large bullets may produce ammo that has chambering problems. Also seating depth can affect chambering. The ID of a 9mm case is tapered so deep seating can bulge cases causing chambering problems.
I'd sugggest slugging the barrel and sizing cast bullets .001"-.002" larger than groove diameter. Use the "plunk test" to determine if your cartridges will chamber freely...
I have 3, 9mm and 4, 38/357s and I use the same cast bullet in them all; a Lee 125 gr RNFP. I just size the bullet for use in a particular gun...
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