Kutter, thanks for explaining all of that information. I have said this on here a few times and have experienced barrels that were not soldered the whole length by inserting a .001 feeler gage under the bottom rib in spots along the barrel. Another way I have found out about is by immersing the barrels during bluing and seeing bubbles along the length in various spots. These barrels all rang. So far I have never had a gun that had a dull thunk to it.

David