Doc: The H&R American was made in two models. The First Model (3 variations, 1884-1904) and the Second Model (No variations, 1905-1941). The first Model was chambered for .32 S&W (6 shots) or .38 S&W (5 shots) and was for black powder only. The Second Model was chambered for .32 S&W Long and .38 S&W and may be used with smokeless powder ammunition. Smokeless models will have the caliber inscribed on the left barrel flat. The First Model had a round barrel. An octagon barrel was introduced on the Second Model about 1905. A 2.5 in bbl was standard, but 4.5 in or 6 in could be obtained. Markings include THE AMERICAN DOUBLE ACTION in two lines on the top strap. H. & R. ARMS COMPANY, WORCESTER, MASS.U.S.A is on the top barrel flat and 32 S & W CTGE is on the left barrel flat. I have noted that 32 S&W CTGE will be marked even on guns that will chamber .32 S&W Long. If a 32 Long chambers and the caliber mark is on the left barrel flat, then it will fire modern 32 Long ammo, which is said to be loaded light enough to safely fire in old guns. Be wary. Don’t shoot it if you don’t have to. Most of t++his information is taken from Bill Goforth’s book, H & R Arms Company, 1871 - 1986. This is a very good book even though it has many omissions. This is not the fault of the late Mr. Goforth. H&R had so many model designations for handguns, rifle, and shotguns, some of them with low sales numbers, that many of them cannot be found for examination.