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T. O'Heir · February 15, 2020, 02:05 PM

"...expect non-jacketed lead 9mm bullets to lead the barrel..." Leading is caused by trying to drive a cast bullet at jacketed bullet velocities. Nothing to do with bullet diameter.
If the 9mm didn't work reasonably well in a .357" barrel Ruger's MBA's wouldn't be selling 'em.

February 15, 2020, 02:05 PM	#10
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	"...expect non-jacketed lead 9mm bullets to lead the barrel..." Leading is caused by trying to drive a cast bullet at jacketed bullet velocities. Nothing to do with bullet diameter. If the 9mm didn't work reasonably well in a .357" barrel Ruger's MBA's wouldn't be selling 'em. __________________ Spelling and grammar count!