.416

Technical Specifications

 

Country of Origin United Kingdom
Diameter – Bore .408” (10.36mm)
Diameter – Groove .416” (10,57mm)
Introduced 1911
Pressure – Max Average 47,138 psi (325 MPa)
Regulators CIP / SAAMI
Groove Details 6 x .142” (3,60mm)
Shellholder – RCBS 37
Twist – Proof Barrel 1:20” (508mm)
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Cartridge Essentials

 

Action Size Recommended Magnum length, .75″ diameter bolt shaft with Rigby face
Barrel Life 3,500 – 4,200 rounds
Case – Body Taper 1.27°
Case – Neck Length .500″ (12,70mm) = 120.0%
Case – Trim Length 2.892″ (73,46mm)
Parent Case Original
Relative Capacity 127.5 gr water (8,278cc)
Shoulder Angle 45°00’00″
Typical Factory Load Guidelines for – Solids
Brand Name Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 0% Expansion
Norma 450-gr Woodleigh Solid 2,150 fps 4,620 ft/lb 87.4
Kynoch 410-gr Woodleigh 2,300 fps 4,817 ft/lb 91.2
Federal 400-gr Woodleigh Hydro 2,400 fps 5,117 ft/lb 96.9
Federal 400-gr TS Sledgehammer 2,370 fps 4,990 ft/lb 94.5
Norma 400-gr Woodleigh Soft 2,375 fps 5,011 ft/lb 94.9
Typical Factory Load Guidelines for Africa – Expanders
Brand Name Bullet Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 100% Expansion
Norma 450-gr Woodleigh Soft 2,150 fps 4,620 ft/lb 43.7
Kynoch 410-gr Woodleigh 2,300 fps 4,817 ft/lb 45.6
Federal 400-gr Barnes TSX 2,400 fps 5,117 ft/lb 48.4
Federal 400-gr Federal Fusion 2,350 fps 4,906 ft/lb 46.4
Federal 400-gr Swift A-Frame 2,350 fps 4,906 ft/lb 46.4
Federal 400-gr TB Bear Claw 2,300 fps 4, ft/lb 44.5
Norma 400-gr Swift A-Frame 2,349 fps 4,902 ft/lb 46.4
Optimum Game Bullet Optimum Application Bands (400-gr averaged)
Band Velocity Parameters Start End
Green-Band ( ≤ 2,600 fps – ≥ 2,200 fps) ± 0 yds ± 75 yds
Amber-Band ( ≤ 2,200 fps – ≥ 2,000 fps) ± 75 yds ± 160 yds