John Rigby & Co has chambered bolt-action rifles in 505 Gibbs for clients who wanted the most powerful commercially available bolt-action cartridge in a London-made platform. The 505 Gibbs fires a 525-grain bullet at 2300 fps from a cartridge that requires a massively enlarged magazine well. Rigby's ability to produce a functional and well-regulated rifle in this extreme caliber reflects the workshop's technical capabilities. Type: Rifle Action: Bolt-Action Caliber: 505 Gibbs Capacity: 3 Year introduced: 1911, United Kingdom Weight: 196 oz Overall length: 46.5" Status: Active Intended use: Dangerous Game