An Auguste Francotte Sidelock Double Rifle chambered for the .577 Nitro Express cartridge.

Beretta Model 455 Double Rifle chambered for the .500 Nitro Express cartridge.

A George Gibbs Boxlock Double Rifle chambered for .450/400 Nitro Express cartridge.

A Holland & Holland 'Round Action'Double Rifle chambered for .500 Nitro Express - 3" cartridge.

A fabulous Holland & Holland 'Royal' Double Rifle chambered for the .303 British cartridge with 28" barrels featuring a file cut quarter rib with platinum lined express sights.

A Holland & Holland 'Royal' Double Rifle chambered for the .500/465 Nitro Express cartridge. A fine example from this renowned London Best gun and rifle maker.

A Holland & Holland 'Royal' Hammerless Ejector Double Rifle chambered for the .577 3 1/4" Nitro Express cartridge once that was built by Holland & Holland for the great African Big Game Hunter Baron Bror von Blixen-Finecke.

A Back-Action Sidelock ejector double rifle chambered for the H&H .375 Flanged Magnum cartridge one of two double rifles made to commemorate the millennium - one being this .375 and the other being a .465 both Holland & Holland propriety cartridges.

A Back-Action Sidelock ejector double rifle chambered for the H&H .375 Magnum Rimless cartridge circa 1951.

A Holland & Holland 'Royal' Deluxe Double Rifle chambered for .500 Nitro Express 3" cartridge. A fine example from this renowned London Best gun and rifle maker.

A Holland & Holland 'Royal'Double Rifle chambered for H&H .375 magnum rimless cartridge.

A Holland & Holland 'Royal' Double Rifle chambered for the .500/450 Nitro Express cartridge.

A Rare Boxlock Double Rifle from Holland & Holland from circa 1922. It is one of only twelve boxlock double rifles that were every made by this renown London gunmaker. The 25" rifled barrels have a rib extension dolls head third fastener and a quarter rib are chambered for the .500/465 Nitro Express cartridge.

A J Purdey & Sons Underlever Sidelock Double Rifle chambered for .450 No. 2 Nitro Express cartridge.

A Back-Action Sidelock Ejector Double Rifle with 24” ejector rifled barrels, rib extension dolls head third fastener and a quarter rib.

A S. Lucchini Sidelock Double Rifle chambered for .470 Nitro Express cartridge.

A Verney-Carron 'SX' O/U double rifle chambered for the .450/400 Nitro Express 3" cartridge with interchangeable 20 gauge barrels.

A Westley Richards 'Droplock' Double Rifle chambered for the .470 Nitro Express cartridge.

A Westley Richards Sidelock Double Rifle chambered for the .404 Jeffery Rimless cartridge.