This was one of the calibers used in revolvers made by Belgian gunsmith Albert Spirlet who had his shop at Quai de Boverie, 5 in Liège in Belgium around 1894. The revolver used an ingenious design where the barrel tipped upwards instead of downwards, although the 1870 Spirlet patent was on the extraction system and not the tip-up barrel. Spirlet also manufactured cattle-killing devices. (Erlmeier, Brandt Ref. 138G).