7mm Remington Magnum

Technical Specifications

 

Country of Origin United States
Diameter – Bore .277” (7,04 mm)
Diameter – Groove .2837” (7,206 mm)
Introduced 1962
Pressure – Max Average 61,000 psi (421 Mpa)
Regulators CIP & SAAMI
Groove Details 6 x 0.110” (2,79 mm)
Shellholder – RCBS 4
Twist – Proof Barrel 1:9.5” (1:241,3 mm)
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Cartridge Essentials

 

Action Size Recommended Standard length & magnum bolt face
Barrel Life 1,850 – 2,200 rounds
Case – Taper 0.7°
Case – Neck Length .2712” (6,89mm) = 95.5%
Case – Trim Length 2.492”€ (63,30 mm)
Parent Case .375 H&H Magnum
Relative Capacity 82.0 gr water (5,324 cc)
Shoulder Angle 25°00’00”€
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Typical Factory Load Guidelines for Africa – Expanders
Brand Name Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 100% Expansion
Federal 175-gr Federal Soft Point 2,860 fps 3,179 ft/lb 44.1
Federal 175-gr Federal Fusion 2,760 fps 2,961 ft/lb 41
Federal 175-gr TB Bear Claw 2,750 fps 2,939 ft/lb 40.7
Norma 170-gr Norma Oryx 2,887 fps 3,147 ft/lb 43.6
PMP 170-gr ProAm 2,756 fps 2 868 ft/lb 39.8
Nosler 168-gr TG Long Range 2,880 fps 1,974 ft/lb 27.4
Federal 165-gr Sierra GameKing 2,950 fps 3,189 ft/lb 44.2
Hornady 162-gr Hornady SST 3,303 fps 3,303 ft/lb 45.8
Hornady 162-gr Hornady Interlock 2,940 fps 3,110 ft/lb 43.1
Barnes 160-gr Vor-Tx TSX 2,950 fps 3,093 ft/lb 42.9
Federal 160-gr Nosler Partition 2,950 fps 3,093 ft/lb 42.9
Remington 160-gr Swift A-Frame 2,900 fps 2,989 ft/lb 41.4
Remington 160-gr Ultra Bond Core-Lokt 2,950 fps 3,093 ft/lb 42.9
Norma 156-gr Norma Oryx 2,953 fps 3,021 ft/lb 41.9
Nosler 160-gr Nosler Accubond 3,200 fps 3,639 ft/lb 50.4
Nosler 160-gr TG Accubond 2,925 fps 3,040 ft/lb 42.1
Hornady 154-gr Hornady SST 3,100 fps 3,287 ft/lb 45.6
Barnes 150-gr Vor-Tx TTSX 3,060 fps 3,120 ft/lb 43.2
Federal 150-gr Federal SP 3,110 fps 3,222 ft/lb 44.7
Federal 150-gr Sierra GameKing 3,110 fps 3,222 ft/lb 44.7
Federal 150-gr Federal Fusion 3,050 fps 3,099 ft/lb 43
Federal 150-gr Nosler Partition 3,025 fps 3,049 ft/lb 42.3
Norma 150-gr Swift Scirocco II 3,166 fps 3,339 ft/lb 46.3
Nosler 150-gr Custom Partition 3,100 fps 3,202 ft/lb 44.4
PMP 150-gr Swift Scirocco II 3,018 fps 3,034 ft/lb 42.1
Remington 150-gr Swift Scirocco 3,110 fps 3,222 ft/lb 44.7
Barnes 140-gr Vor-Tx TTSX 3,100 fps 2,988 ft/lb 41.4
Norma 140-gr Barnes TSX 3,117 fps 3,021 ft/lb 41.9
Remington 140-gr Copper Solid 3,175 fps 3,135 ft/lb 43.5
Nosler 140-gr Custom Accubond 3,200 fps 3,184 ft/lb 44.1
Nosler 140-gr Custom Accubond 3,039 fps 2,872 ft/b 39.8
Remington 140-gr Managed Recoil CL 2,710 fps 2,284 ft/lb 31.1
Remington 140-gr Ultra Bond Core-Lokt 3,175 fps 3,135 ft/lb 43.5
Hornady 139-gr Hornady GMX 3,190 fps 3,142 ft/lb 43.6
Optimum Game Bullet Optimum Application Bands (150-gr averaged)
Band Velocity Parameters Start End
Red-Band ( > 2,600 fps) 0 yds ± 325 yds
Green-Band ( ≤ 2,600 fps – ≥ 2,200 fps) ± 325 yds ± 550 yds
Amber-Band ( ≤ 2,200 fps – ≥ 2,000 fps ) ± 550 yds ± 700 yds
Bullet Recommendations for Africa
Plains Game Premium fifth to seventh generation bullets
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Game Weight Recommendation
250-lb to ≤ 550 lb (110 kg – ≤ 250 kg)
Most Suitable African (assuming legality)
Medium Game : Cats up to Leopard, Addax, Gemsbok, Hartebeest, Lechwe, Nyala, Scimitar-horned Oryx, Sable, Sitatunga, Tsessebe, Black wildebeest
* Read all about these animals in the book Game Animals of the World by Chris & Tilde Stuart
Optics Guidelines
Eye Relief Non critical ≥ 3.0” (≤ 77mm)
Exit Pupil ≥ 2.0mm
Magnification: Red-Band ≤12x
Magnification: Green-Band ≥ 12x – ≤ 24x
Magnification: Amber-Band ≥ 24x – ≤ 28x
Objective Lens ≥ 48mm – ≤ 56mm
Parallax Adjustability Yes
Reticules Bush-range – heavy bullets. Duplex.
-range plains game. Fine reticule with bars or mil-dots
Handloading Guidelines
Load Development 0.5 grain increments
Primer Large Rifle Magnum
Propellant Range Ultra-slow-burning rifle: ≥ IMR-4831 – ≤ Hodgdon H-1000
Tips Neck resize and do accuracy steps.
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt