I would think twice about spending lots of funds....
shoot .38 wadcutters in your .357 Magnums...you will see little accuracy improvement getting a gun with a shorter cylinder chamber....
Should you come across an old K-38, which became the Model 14, then fine. But unless you are just wanting another gun, it will give you little, if any, advantage. You might want to look for a Model 52, a .38 wadcutter semi-auto, known for accuracy,,,,,sometimes not.....but a good investment. They are more expensive but have much higher resale value. Mine was a tack-driver...once I changed the barrel.

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Terry
SWCA, SWHS, IWLA, NRA