.243 Winchester

Technical Specifications

 

Country of Origin United States
Diameter – Bore .237” (6,02mm)
Diameter – Groove .243” (6,17mm)
Introduced 1955
Pressure – Max Average 60,000 psi (415 MPa)
Regulators SAAMI & CIP
Groove Details 6 x .068” (1,73mm)
Shellholder – RCBS 3
Twist – Proof Barrel 1:10” (254mm)
Cartridge Essentials

 

Action Size Recommended Miniature length & .223 bolt face
Barrel Life 2,000 – 2,750 rounds
Case – Body Taper 69°
Case – Neck Length .2407” (6,114mm) = 99%
Case – Trim Length 2.037” (51,74mm)
Parent Case .308 Winchester
Relative Capacity 54 gr of water (3,506 cc)
Shoulder Angle 20°
Typical Factory Load Guidelines for Africa
Brand Name Bullet Weight Bullet Description Velocity Fps Energy Ft/Lb Trauma Potential 100% Expansion
Handload 105-gr Game – Speer SP 2,950 fps 2,030 ft/lb 32.9
Remington 100-gr Game – Ultrabond 2,960 fps 1,946 ft/lb 31.5
Remington 90-gr Game – Scirocco 3,120 fps 1,946 ft/lb 31.5
Barnes 80-gr Game – TTSX 3,350 fps 1,994 ft/lb 32.3
Hornady 75-gr Varmint – HP 3,400 fps 1,926 ft/lb 10.4 (fragment)
Optimum Game Bullet Optimum Application Bands (averaged)
Band Velocity Parameters Start End
Red-Band ( > 2,600 fps) 0 yds ± 175 yds
Green-Band ( ≤ 2,600 fps – ≥ 2,200 fps) ± 175 yds ± 400 yds
Amber-Band ( ≤ 2,200 fps – ≥ 2,000 fps) ± 400 yds ± 500 yds
Bullet Recommendations for Africa
Varmint 70-gr to 85-gr frangible bullets
Cats 100-gr bonded core bullets
Antelope 105-grain standard or 100-grain monometal/bonded core
African Game Weight Recommendations
≤ 180-lb ( ≤ 80-kg)
Most Suitable African Species (assuming legality)
Varmints Antbear,baboons,brown hyena and spotted hyena,Cats,Cheetah,Antelope,Blesbok,bontebok,bushbuck,impala,Arabian oryx, reedbuck, reedbuck and
Optics Recommendations
Eye Relief Non critical
Exit Pupil ≤ 3mm
Magnification: Red-Band ≥ 6x
Magnification: Green-Band ≥ 16x
Magnification: Amber-Band ≥ 20x
Objective Lens ≥ 50mm – ≤ 56mm
Parallax Adjustability Yes
Reticules Fine duplex
Handloading Recommendations
Load Development 0.5 grain increments
Primer Standard Large Rifle (Match)
105-gr: Slow & Ultra-slow rifle: ≥Hodgdon H-4350 to ≤ Hodgdon Retumbo
100-gr: Slow-burning rifle: ≥Hodgdon H-4350 to ≤ Hodgdon H-1000
90-gr: Slow-burning rifle: ≥Hodgdon H-4350 to ≤ Hodgdon H-1000
75-gr: Medium- & Slow rifle: ≥ Hodgdon Varget to ≤ Hodgdon H-100V
Trim regularly and check for doughnuts