Hello. I'm brand new to this forum and would appreciate any info on a recent purchase...Nickle Rossi 370...2 1/4" bbl (measured from cylinder to barrel tip). Marked made in brazil Garcia Sporting Arms Wash D.C. 38 special Amadeo Rossi S.A. Sao Leopoldo R.G.S. This 5 shot revolver is plainly stamped 370 with an "S" on frame under the grips and the crane. Serial number on butt is 171706. Rossi grips. Rossi model number helpline has no information for me. The gun is in good shape and functions perfectly...however a strange thing occurred when I cleaned the cylinders...A 357 mag cartridge will drop right in and the cylinder will close and rotate normally. As a long time handloader, I didn't fire the 357's. The barrel is marked 38 special....NOT +P...Not 357 magnum! The cylinder is marked only with an "S". I'm not familiar with this model and need the approx year of manufacture and any other models that a cylinder (38 spl) might fit. I intend to have it replaced with the correct one if available. Thanks!