Dewey; According to Ned Schwing's book on the Model 21, Mr. Frank Burton took out a patent on the dovetailed barrels. In addition, this book makes the statement "Instead of brazing the barrels together, a common technique, a vertical dovetail in a mechanical interlock was utilized. This resulted in no distortion of the temper or strength of the barrel metal." Apparently, this dovetail and the lumps were then soldered using lower heat rather than the higher heat utilized in brazing. Does this make any sense (i.e., protecting the character/integrity of the metal which apparently had been heat treated) as to why they chose this vertical dovetail system and solder rather than going with brazing?

Socialism is almost the worst.