Did S&W routinely factory test fire any of its K-Series revolvers in the post war period (1947 - 1964). Thanks for your replies.

I'd have to believe they test fired (and still do) every single centerfire revolver with proof loads to ensure the integrity of each gun. 'Proof loads' are loaded to approximately 150% higher pressure than standard loads for any given caliber and the firing is done inside a proof box to eliminate danger to people in the event of "spontaneous disassembly" in the event of a cylinder failure.

I'd think they'd also fire at least a cylinder full through each gun to be sure the sights were regulated.

Those are personal observations from having spent 21 years in firearms manufacturing, though not at S&W.

Mark

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S&W Forum Member #721

Thank-You for your reply

They shoot 3 rounds, one out of every other chamber. You can tell if it has only been factory fired by the alternating marks on the front of the cylinder.

Thank-You.

How else would the sights work if they didn't test fire them?

From 1947 to 1964 I had been under the impression they test fired everything.

I also thought the practice of test firing only every other charge hole was a practice began after the time period you mention.

I would also like to know for sure.

My S&Ws bought new in early/mid 1970s invariably had 3 rounds fired, alternating charge holes