The only option I'm aware of would be to purchase a slightly shorter front sight. (or a higher rear sight) A plain bladed aftermarket dovetail sight could be installed and shortened the required amount to correct your POI at the desired distance.

S&W 3rd gen pistols have 74° x .250" front dovetails.

Dawson Precision makes a plain front sight for the 3rd Generation S&W that could be installed and shortened as needed if you decide to try that remedy.

Dawson Precision S&W 5906 Black Front Sights - Dawson Precision, Inc.

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Ret. LE, FA Instr, S&W Armorer