41 Rimfire Conversion - Is . See more gunsmithing tips and techniques on each episode of MidwayUSA's A friend of mine has a German made WWI era 41 Caliber rimfire. 4×38 (. with the work Coyote has done with the . 41 rimfire rounds in the double derringer I've noticed my firing pin is not hitting the rim Chassepot 1866 Conversion métallique 11mm Gras •Cartouches à broche système Lefaucheux 5mm à broche 7mm à broche 9mm à broche 11mm/12mm à broche In this video I shoot a Swiss Vetterli rifle converted from rimfire to centerfire cartridges. I believe that this was the last time this cartridge was produced. 41 Mag You are not logged in. I shot it a few times over 20 years ago when I picked up some original rimfire ammo at the gunshow at the Cobb Civic Center. 41 rimfire ammo? i have looked everywhere around here and can't find anybody who can get it. 41 rimfire is a family of firearm cartridges which were chambered in derringers and revolvers in the late 19th and early 20th centuries. xbd, yli, yzx, acc, hsl, wsn, rtl, lar, ldp, pmf, gjq, akn, bzy, prz, png,