Inert** ‘.600 Nitro Express’ round by ‘Kynoch & Co. 19056:1. Inert** ‘.600 Nitro Express’ round by ‘Kynoch & Co. 19056:1. Other Ammunition

The .600 Nitro Express was developed by London gun makers ‘W.J. Jeffery & Co.’ Sources vary about the date of its introduction, although it would seem in 1900 the first .600 Nitro Express rifle was produced by W.J. Jeffery & Co, a 15 lb (6.8 kg) double barrelled hammer rifle. Jeffery’s produced around seventy rifles in .600 Nitro Express in four actions, double barrelled hammer break-open, single barrelled break-open, falling block and double barrelled break-open with and without ejectors. Until the introduction of the .700 Nitro Express in 1988, the .600 Nitro Express was the most powerful commercially available hunting rifle cartridge in the world. Aside from ‘W.J. Jeffery & Co’ several gun makers have and continue to offer rifles chambering this .600 Nitro Express, although in 2009 it was estimated by Holland & Holland that only around one hundred .600 Nitro Express rifles had ever been produced to that time. See ‘Cartridges of the World’ 9th Edition by ‘Frank.C.Barnes’page 374. 9 ½ cm in length with ‘600 Nitro’ and the manufacturer ‘Kynoch’’ imprinted. Kynoch was a manufacturer of ammunition, later incorporated into ICI but remaining as a brand name for sporting cartridges. The price includes U.K. delivery. 19056:1