long story short, my 83 cylinder is right @ .429; the bbl is tighter than .4275
tighter than 0.4275" ? like maybe 0.357"? Maybe FA put the wrong barrel on your gun!
You think you got problems with throats 0.0015" over bore diameter? You should feel bad for Mike Buchholz (see the thread "used premier grade"). He has a FA that the FA factory confirmed was bad the day it left the factory. They wanted $450 to fix it...
Maybe for a few hundred bucks they will take off your 357 barrel and put on a 44!
Seriously though, I'm just trying to stimulate this forum as are you - its dead as you've noticed. I don't know why your bore is that tight (I've only got a 454 - no help to you). It would be nice if you could get an answer on this forum. I still can't believe Mike had to pay out to fix a factory defect and apparently I'm the only one outraged besides Mike