There are more than 2 variations. They have 2.5" chamber, 3" chamber, snub nose, 3" barrel, 9.5" barrel, and a polymer frame model. Rossi sells a "Circuit Judge" which is a rifle revolver in .45/.410. http://www.rossiusa.com/images/imagesMain/SCJ4510SS_012.jpg Taurus and Rossi are both Brazilian and so are almost certainly in cahoots.