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Old September 13, 2012, 05:51 PM   #23
RickB
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Join Date: March 1, 2000
Location: Boise, ID
Posts: 8,511
Quote:
That's a pretty weird failure - peening of the firing pin hole. I don't think I have ever heard of that being a chronic problem in any gun,

It was a common problem in early the 1911s with soft slides. In 1936, Colt started installing a hardened insert in the breechface. The insert was used through the end of the contracts in 1945, and is often mistaken for a toolmark.
Good point, but I wasn't around prior to 1936 to hear about it!
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