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243 Winchester
243 Winchester Reloading
243 Winchester Hunting & Ballistics
243 Winchester Ballistics Table

243 Winchester:

 The 243 Winchester is a .24" caliber, rimless, bottleneck cartridge case design, centerfire rifle cartridge. The 243 Winchester cartridge casing is reloadable after the cartridge has been fired or spent with various combinations of primer, powder and .243" diameter bullets.

Specifications:
243 Winchester Cartridge:
Cartridge Type: Centerfire Rifle.
Bullet Diameter: .243".
Primer Diameter: .210".
Primer Type: Large Rifle.
Case Neck Diameter: .276".
Case Shoulder Diameter: .454".
Case Base Diameter: .471".
Case Rim Diameter: .473".
Min. Case Length: 2.035" / Trimmed.
Max. Case Length: 2.045" / Stretched.
Min. Cartridge Loaded Length: 2.540".
Max. Cartridge Loaded Length: 2.710".
Max. Average Pressure: 60,000 PSI.
243 Winchester Rifle:
Common Barrel Length: 24".
Rifling Twist Rates: 1 in 9" - 1 in 10".
Bore Land Diameter: .237" / 6.019mm.
Bore Groove Diameter: .243" / 6.172mm.
243 Winchester Ammunition:
Ballistics Table, Test Rifle:
Weight - 8.5 Lbs.
Barrel Length - 24".
243 Winchester
Cartridge
Manufacturer
Bullet
Weight
Grains
Bullet
Ballistic
Coefficient
Muzzle
Velocity
FPS.
Muzzle
Energy
FT.LBS.
Recoil
Energy
FT.LBS.
Winchester 55 .276 3,910 1,867 6.43
Hornady 58 .250 3,925 1,824 6.82
Black Hills 62 .199 3,700 1,885 6.96
Federal 70 .309 3,450 1,850 7.44
Remington 75 .330 3,375 1,897 8.18
Winchester 80 .255 3,350 1,993 8.50
Federal 85 .391 3,200 1,933 8.85
Hornady 87 .400 2,800 1,514 7.85
Winchester 90 .354 3,100 1,920 9.11
Winchester 95 .411 3,100 2,027 9.88
Winchester 100 .372 2,960 1,945 10.13
History:

The popular 243 Winchester centerfire rifle cartridge originated as a wildcat based on the 308 Winchester brass necked down to accept .243" diameter bullets, Warren Page developed the first prototype of this cartridge. Warren Page, then shooting columnist for Field & Stream magazine, was an avid wildcatter as well, had convinced many American hunters through his writings that his .24" caliber wildcats would effectively harvest varmints and deer as a combination cartridge.

 Winchester agreed and this cartridge was made available to the public by Winchester Repeating Arms Company in 1955. Winchester chambered the new cartridge in their new Model 70 Featherweight bolt action rifle using a 22 inch, 1 in 10 inch twist barrel and offered 80 and 100 grain bullet ammunition loadings for its intended dual purpose use as a varminter and a deer cartridge.

 The 243 Winchester 80 grain bullet loading was designed primarily for varmint and predator hunting and the 100 grain bullet loading was designed for use as a thin skinned big-game cartridge, today there are many various weight bullets offered in factory produced ammunition. The 243 Winchester is the first true dual purpose class of hunting rifle cartridges and it is now among the top five most popular and widely available of all centerfire rifle cartridges in the world today.

Uses:

 The .243 Winchester rifle chambering is an excellent choice for varmint hunting as it is a powerful varmint cartridge and one that I consider as a long range varmint cartridge. The .243 offers plenty with low recoil, and at a high power flat bullet trajectory level. The .243 is very popular for varminting and predator hunting because it offers a tremendous variety of loads, bullet weights and plenty of loading data. The heavier .243" bullet does better in the wind than any smaller caliber. Rifles with a 1 in 10" twist rate will shoot quite accurately many different lightweight bullets.

 The .243 Winchester rifle chambering is an excellent choice for deer and antelope hunting as it is a very flat shooting cartridge when loaded with heavier bullet weights. Rifles with a 1 in 9" twist rate will shoot quite accurately many different heavier weight bullets including Berger VLD's.

 243 Winchester bullet weights less than 80 grain are better suited for use on varmints such as groundhogs, prarie dogs and predators such as bobcats, coyotes and wolves.
 Bullet weights between 80 grain - 90 grain have been used quite successfully for dual purpose use on varmints, predators and smaller thin-skinned big-game animals for years.
 Bullet weights greater than 90 grain are better suited for use on big-game such as wild pigs, wild boar, javelina, blacktail deer, whitetail deer, mule deer and black bear.

 The popular 243 Winchesters in most rifle configurations are very well known for their extreme accuracy, bolt actions are very popular, this is partially due to the fact that little recoil is felt by the shooter therefore reducing recoil flinch when shooting. The 243 Winchester offers very good hunting ballistics when hunting for;
Bobcat - Cougar - Coyote
Antelope - Hogs - Javelina
Blacktail Deer - Mule Deer - Whitetail Deer.

243 Winchester Rifle:
Winchester Model 70
Rifle barrel length: 24 Inches.
Rifle-scope mounted height: 1.8 inches.
243 Winchester Ammunition:
Cartridge manufacturer: Hornady.
Bullet diameter: .243 Inch.
Bullet weight: 58 Grains.
Bullet ballistic coefficient: .250.
243 Winchester Ballistics:
Rifle zeroed at 218 yards.
Maximum point blank range is 248 yards.
Bullet trajectory set at 1 inch mid-range rise.
Bullet
@
Velocity
/ FPS.
Energy
/ FT.LBS.
Trajectory
/ IN.
Muzzle 3,925 1,984 - 1.8
100 yds. 3,465 1,546 + 0.8
200 yds. 3,051 1,199 + 0.4
300 yds. 2,674 921 - 3.7
400 yds. 2,327 697 - 12.6
500 yds. 2,007 519 - 28.1
Abbreviations:
/ FPS. = Feet Per Second.
/ FT.LBS. = Foot Pounds.
/ IN. = Inches.
243 Winchester Rifle:
Winchester Model 70
Rifle barrel length: 24 Inches.
Rifle-scope mounted height: 1.8 inches.
243 Winchester Ammunition:
Cartridge manufacturer: Hornady.
Bullet diameter: .243 Inch.
Bullet weight: 95 Grains.
Bullet ballistic coefficient: .355.
243 Winchester Ballistics:
Rifle zeroed at 230 yards.
Maximum point blank range is 267 yards.
Bullet trajectory set at 2 inch mid-range rise.
Bullet
@
Velocity
/ FPS.
Energy
/ FT.LBS.
Trajectory
/ IN.
Muzzle 3,185 2,139 - 1.8
100 yds. 2,908 1,784 + 1.7
200 yds. 2,648 1,478 + 1.1
300 yds. 2,402 1,217 - 4.4
400 yds. 2,169 992 - 16.1
500 yds. 1,950 802 - 35.1
Abbreviations:
/ FPS. = Feet Per Second.
/ FT.LBS. = Foot Pounds.
/ IN. = Inches.

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