Boss & Co. of London — makers of arguably the finest over-under shotgun ever produced — also built side-by-side express double rifles on commission. The Boss SxS in .470 NE represents the application of the Boss workshop's extraordinary craftsmanship to a dangerous-game rifle. Produced in single digits over the maker's history; each is unique. Type: Rifle Action: Break-Action Caliber: .470 Nitro Express Capacity: 2 Year introduced: 1890, United Kingdom Weight: 104 oz Overall length: 43.5" Status: Active Intended use: safari, collection