The 450/400 Nitro Express is one of the most balanced double-rifle cartridges ever developed, delivering substantial stopping power in a relatively manageable package. The Holland & Holland Royal chambered in 450/400 NE was especially popular with professional hunters who guided clients on mixed-bag safaris and needed a rifle capable of stopping a charge without brutalizing the shooter. The 3.25-inch case version is the British standard; American-dimensioned 3-inch variants also exist but are less common. Type: Rifle Action: Double / SxS Caliber: 450/400 Nitro Express Capacity: 2 Year introduced: 1905, United Kingdom Weight: 184 oz Overall length: 42.5" Status: Active Intended use: Dangerous Game / Safari