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Old October 22, 2013, 01:43 PM   #4
Senior Member
Join Date: March 11, 2010
Location: South East Pa.
Posts: 3,364
Good question. I never thought about it. I have silver soldered and brazed on shotgun barrels because I assumed they were some type low carbon material. I also welded on them over the years, without any change in material hardness. I would say not 4140. It is really easy to remove dents in them (And put them in).
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