Modern dangerous game cartridge from prestigious Rigby company. More powerful than .458 Lott with softer recoil than .505 Gibbs. For serious elephant hunters.
Type: Rifle
Introduced: 1995, United Kingdom
Parent case: .416 Rigby
Standardization: Proprietary
Bullet diameter: 0.458" (11.63 mm)
Case length: 2.992" (76 mm)
Overall length: 3.75" (95.25 mm)
Max pressure: 52,000 PSI
Rim type: Rimless
Primer: Large Rifle Magnum
Typical twist rate: 1:16
Muzzle velocity: 2300–2500 fps
Muzzle energy: 5900–7000 ft-lbs
Effective range: 250 yd
Common bullet weights: 480, 500, 550 gr
Primary use: Hunting
Production status: Limited
Also known as: .450 Rigby Rimless · 11.6x76mm
History: Introduced in 1995 by Paul Roberts and John Rigby & Company as a modern dangerous game cartridge. Based on .416 Rigby case necked up to .458. Provides power level between .458 Lott and .505 Gibbs with manageable recoil. Uses modern powders and pressures for excellent ballistics. Rare and expensive but growing in popularity among serious African hunters.
Notable firearms: Rigby Highland Stalker, Rigby Big Game rifle, CZ 550, Custom Mauser actions
Similar cartridges: .458 Lott, .458 Winchester Magnum, .460 Weatherby