Title says it all, was their ever an alloy 357 K frame ? If so what is/ are the model numbers and any reviews do they hold up ?

J and L frames, yes. No alloy K frames in .357 that I can recall.

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Alan
SWCA LM 2023, SWHF 220

Don't think so but not an expert. Only K frame .357 I know of is the .357 Combat Magnum which became the Model 19 and the Model 13. Don't know of any alloy variations.

But I have learned to never say never when talking about Smith and Wessons.

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Mike
S&WCA #3065