The 500/465 Nitro Express is an obscure cartridge that was briefly adopted as a post-ban 450 NE alternative before the 470 NE dominated the market. Holland & Holland chambered a small number of Royal Double Rifles for the 500/465 NE, and these guns are among the rarest and most specialized of all H&H dangerous-game rifles. The cartridge fires a .465-caliber bullet from a 500-caliber case, providing exceptional energy transfer. Type: Rifle Action: Double / SxS Caliber: 500/465 Nitro Express Capacity: 2 Year introduced: 1907, United Kingdom Weight: 186 oz Overall length: 43" Status: Discontinued Intended use: Dangerous Game