KWK-12,

My first response, and that of others apparently, was based on the impression that you gave, that the edge of the hammer nose bushing was standing higher than the frame. From your second, I believe, you state that the bushing face is below the face of the breech! Your photo appears that way too! Way different problem.

If the hammer nose bushing is below flush there is only one way to fix it, send it to S&W to have the hammer nose bushing replaced as Armorer951 said. It won't be free, a friend had to send a Model 60-? which had the hammer nose bushing set too low and it cost him something like $60 as I recall. This was 2-3 years ago. It was a pre-lifetime warrantee gun too.

S&W will do it right, at least as inexpensively as anyone, and probably at least as fast.

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Gunsmithing since 1961