Ran across this article on the S&W guns being imported from Turkey: http://www.nrapublications.org/TAR/SWhunting.asp Question: What is "semi" chopper lump? I know what regular chopper lump barrels are, but this appears to involve brazing of the barrels on to a plate. Are there strength issues with the brazing, or is a true chopper lump construction just overkill?