Smith & Wesson produced approximately 10,000 Model 647 revolvers. This model, which is chambered for the .17 HMR cartridge, was introduced in 2003 and is a part of the company's line of rimfire revolvers. Production of the Model 647 was relatively limited compared to other models, contributing to its rarity.
Not available in the public domain.
Only Smith and Wesson knows and they aren't telling.
No such model.
Informaiton not available in the public domain.
Only S&W knows.
Information not available in the public domain.
Many different models have been chambered for this round.
Data not available in the public domain.
Only S&W knows; no.
2
It could be one of many. Call S&W and they will tell you.
It could be one of many. Impossible to answer without knowing caliber.