The most powerful .416 ever made. 400-grain bullets at 2,700 fps — outperforming .416 Rigby by over 200 fps with dramatically more energy.
Type: Rifle
Introduced: 1989, United States
Parent case: .375 H&H Magnum
Standardization: SAAMI
Bullet diameter: 0.416" (10.57 mm)
Case length: 2.913" (73.99 mm)
Overall length: 3.6" (91.44 mm)
Max pressure: 65,000 PSI
Rim type: Belted
Primer: Large Rifle Magnum
Typical twist rate: 1:14
Muzzle velocity: 2500–2700 fps
Muzzle energy: 4856–6474 ft-lbs
Effective range: 300 yd
Common bullet weights: 350, 400 gr
Primary use: Dangerous Game, Big Game
Production status: Active
Also known as: .416 Wby Mag
History: Introduced by Weatherby in 1989, the year .416 cartridges proliferated (also .416 Remington Magnum). Weatherby's version operates at higher pressure than the others, using the company's larger belted case. Generates more energy than any other standard .416.
Notable firearms: Weatherby Mark V
Similar cartridges: .416 Remington Magnum, .416 Rigby, .458 Lott