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Paris
Friday, July 28, 2017

.300 Holland & Holland

Technical Specifications

 

Country of Origin United Kingdom
Diameter – Bore .300” (7,61 mm)
Diameter – Groove .308” (7,82 mm)
Introduced 1925
Pressure – Max Average 62,366 psi (430 MPa)
Regulators CIP & SAAMI
Groove Details 6 x 0.1071” (2,72 mm)
Shellholder – RCBS 4
Twist – Proof Barrel 1:10.0” (1:254 mm)
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
Cartridge Essentials

 

Action Size Recommended Stretched length & standard magnum bolt face
Barrel Life 2,250 – 2,750 rounds
Case – Body Taper 1.91°
Case – Neck Length .3713” (9,43mm) = 120.6%
Case – Trim Length 2.842” (72,91mm)
Parent Case .375 H&H Magnum
Relative Capacity 85.2 gr water (5,532 cc)
Shoulder Angle 8°30’€™€™00”
Typical Factory Load Guidelines for Africa – Expanders
Brand Name Bullet Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 100% Expansion
Kynoch 220-gr Woodleigh Soft 2,350 fps 2,689 ft/lb 34.5
Federal 180-gr Nosler Partition 2,880 fps 3,316 ft lb 42.4
Federal 180-gr Trophy Bonded Tip 2,880 fps 3,316 ft lb 42.4
Federal 180-gr Trophy Copper 2,880 fps 3,316 ft lb 42.4
Hornady 180-gr Hornady Interbond 2,900 fps 3,362 ft/lb 43
Kynoch 180-gr Woodleigh Soft 2,700 fps 2,914 ft/lb 37.3
PMP 180-gr PMP Pro-Am 2,870 fps 3,293 ft/lb 42.1
Optimum Game Bullet Optimum Application Bands (180-gr averaged)
Band Velocity Parameters Start End
Red-Band ( > 2,600 fps) 0 yds ± 250 yds
Green-Band ( ≤ 2,600 fps – ≥ 2,200 fps) ± 250 yds ± 475 yds
Amber-Band ( ≤ 2,200 fps – ≥ 2,000 fps) ± 475 yds ± 600 yds
Bullet Recommendations for Africa
Big game          Premium fourth and also fifth to seventh generation bullets
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt
African Game Weight Recommendation
350-lb  to ≤ 625 lb (160 kg – ≤ 285-kg)
Most Suitable African Species (assuming legality)
Medium Game: Cats up to Leopard, Kudu, Mountain Zebra, Oryxes, Red Hartebeest, Roan, Sable, Tsessebe, Waterbuck, Wildebeests.
* Read all about these animals in the book Game Animals of the World by Chris & Tilde Stuart
Optics Guidelines
Eye Relief Non critical ≤ 3.75” ( ≤ 95mm)
Exit Pupil ≥ 5mm
Magnification: Red-Band ≤ 5x
Magnification: Green-Band ≥ 5x – ≤ 14x
Magnification: Amber-Band ≥ 14x – ≤ 24x
Objective Lens ≥ 48mm – ≤ 56mm
Parallax Adjustability Yes
Reticules Plains Game. Fine reticule with bars or mil-dots
Handloading Guidelines
Load Development 1.0 grain increments
Primer Large Rifle Magnum
Propellant Range Slow-burning rifle: ≥ IMR-4007 – ≤ IMR-4831
Tips Neck resize and do accuracy steps.
* Read all about this cartridge in the book African Dangerous Game Cartridges by Pierre van der Walt