.470 Nitro Express 3¼” (Lang)

Technical Specifications

 

Country of Origin United States
Diameter – Bore .467” (11,85mm) CIP – .459” (11,65mm) SAAMI
Diameter – Groove .474” (12,05mm) CIP – .4736” (12,03mm) SAAMI
Introduced 1907
Pressure – Max Average 39,160 psi (270 MPa)
Regulators CIP & SAAMI
Groove Details 7 x .151” (3,48mm) CIP – 6 x .160” (4,064mm) SAAMI
Shellholder – RCBS 46
Twist – Proof Barrel 1:21” (533mm) CIP – 1”20” (508mm) SAAMI
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Cartridge Essentials

 

Action Size Recommended Miniature length & .223 bolt face
Barrel Life 7,000 – 8,000rounds
Case – Taper 1.01°
Case – Neck Length 0.75” (19.05mm) = 157.9%
Case – Trim Length 3.242” (82,35mm)
Parent Case .500 NE 3¼”
Relative Capacity 146.0 gr water (9,480 cc)
Shoulder Angle 7°10’50”
Typical Factory Load Guidelines for Africa
Brand Name Bullet Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 100% Expansion
Barnes 500-gr Vortx Solid 2,150 fps 5,133 ft/lb 85.1 (no expansion)
Federal 500-gr Cape Shok Hydro Solid 2,150 fps 5,133 ft/lb 85.1 (no expansion)
Federal 500-gr Cape Shok Sledgeham 2,150 fps 5,133 ft/lb 85.1 (no expansion)
Kynoch 500-gr Solid – Woodleigh 2,125 fps 5,015 ft/lb 83.1 (no expansion)
Norma 500-gr PH Solid 2,100 fps 4,897 ft/lb 81.2 (no expansion)
Barnes 500-gr Safari Vortx TSX 2,150 fps 5,133 ft/lb 42.5 (expand > penetration)
Federal 500-gr Cape Shok Barnes TSX 2,150 fps 5,133 ft/lb 42.5 (expand > penetration)
Kynoch 500-gr Woodleigh Weldcore 2,125 fps 5,015 ft/lb 41.6 (expand > penetration)
Norma 500-gr African PH Solid 2,100 fps 4,897 ft/lb 40.6 (expand > penetration)
Optimum Game Bullet Optimum Application Bands (averaged)
Band Velocity Parameters Start End
Amber-Band ( ≤ 2,200 fps – ≥ 2,000 fps) ± 0 yds ± 50 yds
Bullet Recommendations for Africa
Plains Game Softs
Soft followed by solids
Elephant Solids only
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
African Game Weight Recommendation
≤ 13,000-lb ( ≤ 6000-kg)
Most Suitable African Species (assuming legality)
Plains Game Giraffe, eland,Dangerous Buffalo, hippo, lion, elephant, rhinoceros
* Read all about these animals in the book Game Animals of the World by Chris & Tilde Stuart
Optics Guidelines
Eye Relief Critical > 4.00” ( > 100mm)
Exit Pupil ≥ 5mm
Magnification: Amber-Band ≥ 1x – ≤ 4x
Objective Lens ≥ 20mm – ≤ 30mm
Parallax Adjustability No
Reticules Bold posts. German #1, #2, #4, #9, #56
Consider illuminated dots
Handloading Guidelines
Load Development 1.0 grain increments
Primer Federal 215
Propellant Range Slow-burning : ≥ Alliant Rel-17 – ≤ Alliant Rel-22
Tips Use filler if loads densities are below 80%
Full length resize handloads
Check all ammo for feeding before hunt
Ensure that monometal bullet diameters are bore / groove diameter compatible
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt