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Old September 29, 2012, 09:48 PM   #3
Tom Servo
Join Date: September 27, 2008
Location: Foothills of the Appalachians
Posts: 11,722
For many years, S&W fitted their barrels rather loosely and kept them from unscrewing by using a cross pin.
Actually, the fitting is the same. The pin was there to keep the barrel from coming completely off if the threads got stripped somehow.

Neither approach is better; the company simply moved towards a more efficient approach. The same goes for not counterboring chambers any more--it wasn't necessary, and it just added to the cost.

There really isn't any difference in function, accuracy, or durability.
Sometimes it’s nice not to destroy the world for a change.
--Randall Munroe
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