Which models are J-Frames?

[Hawg Rider]

Just get a copy of the "Standard Catalog of Smith & Wesson", by Jim Supica.
Any edition will do.

Used ones are on eBay for cheap.

It's a great resource that will answer all your questions and more.

+1. Those charts from the Lucky Gunner are OK, but missing quite a few S&W models- particularly K-frames (17, 18, etc.) and N-frames (20, 23, 25, 29, 57, etc.). As 6string says...get a copy of the SCSW. I already have my "SCSW 5 Ed." reserved for delivery in December.