I tried some .358 B H N 12 bullets through the cylinder throats
of a 357 revolver.
They don't fall through under there own weight, but push through easily. Throats measure with a Mic. at .358.4
So the bullets are .000.4 under.
The groove is .355.5
Should I anticipate any leading problems in the cylinders or the F/cone ? I hate to open up a sizing die for 3 or 4 tenths.
Slugs from a barrel slugging fall through the cylinder throats very easily.