1-a-www-gunnersden-com.gif - 1757 Bytes 1-b-rifles-logo.gif - 1903 Bytes 1-c-guide.gif - 780 Bytes
1-d-home.gif - 1035 Bytes 243 Winchester / History / Rifles / Hunting / Specifications / Reloading.
1-e.gif - 1496 Bytes
1-f.gif - 535 Bytes

 Bolt Action Rifles
 Autoloading Rifles
 Barrel Twist Rates
 Barrel Break-In
 Rifle Scopes
 Rifle Scope Mounts
 Rifle Scope Mounting
 Rifle Scope Sight-In
 Hunting Rifle Sight-In
 Precision Targets
 Rifle Shooting
 Precision Bold Targets.
 Rimfire Ballistics
 Centerfire Ballistics
 Reloading
 Equipment
 How To
 Black Powder
 Recoil
 Reloading Accuracy
 Brass
 Primers
 Powder
 Bullets
 Load Testing
 Run-Out
1-i-information.gif - 1870 Bytes

243 Winchester / History:
Written by: Kim Lockhart, Copyright.

 The popular 243 Winchester center-fire 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.

 The 243 Winchester 80 grain bullet loading was designed 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. Usually bullet weights less than 85 grain are better suited for use on varmints and predators such as coyotes, groundhogs, foxes, bobcats and prarie dogs. Bullet weights of 90 to 100 grain are better suited for use on wild pigs, wild boar, javelina, blacktail deer, whitetail deer, mule deer and black bear. 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.


243 Winchester / Rifles:

 Part of the extreme popularity of the 243 Winchester is the fact that a rifle chambered for this cartridge recoils very little to the shooters shoulder which adds to its over-all accuracy potential of which this cartridge is well known for. The greatest virtue of the 243 Winchester is that it offers a flat bullet trajectory for varmint hunting, predator hunting and has adequate killing power for thin skinned big game animals at a low recoil level that will help any hunter to shoot their rifle more accurately at greater distances.

 Bolt action 243 Winchester rifles are very popular for hunting and target shooting. Compared to most other manually-operated firearm actions, they offer an excellent balance of strength, simplicity, and potential accuracy. The major disadvantage is a slightly lower practical rate of fire than other alternatives, but this is not a critical factor in many types of hunting and target shooting.

 To achieve maximum accuracy from your 243 Winchester rifle there are several things you need to do correctly that will help increase your rifles overall accuracy capabilities.
First: Properly mount your riflescope.
Second: Properly break-in your rifle barrel.
Third: Properly sight-in your rifle.
Fourth: Properly clean your rifles bore.
 To accurately calculate ballistics for your rifle with ballistics programs you need to measure your rifles scope mounted height.

243 Winchester: Rifles, Twist Effects, Model 70's.

243 Winchester / Hunting:

243 Winchester vs. 260 Remington vs. 7mm-08 Remington vs. 308 Winchester.
25-06 Remington vs. 270 Winchester vs. 280 Remington vs. 30-06 Springfield.
264 Winchester Magnum vs. 7mm Remington Magnum vs. 300 Winchester Magnum.
 These are down range trajectory charts for the 243 Winchester cartridge with the scope mounted 1.8 inches above the bore center line plus if you were using these loads, their effective hunting bullet energy range with well placed shots on;
Predators: Such As, Bobcat, Cougar And Coyote.
Deer Size Game: Such As, Antelope, Blacktail Deer, Hogs, Javelina, Mule Deer And Whitetail Deer.
Good Predator Hunting Load:
243 Winchester rifle cartridge manufacturer: Hornady.
Bullet weight: 58 Grains.
Bullet ballistic coefficient: .250.
Bullet muzzle velocity: 3,925 Feet Per Second.
Bullet muzzle energy: 1,984 Foot Pounds.
Bullet trajectory is set at 1 inch mid-range rise.
Rifle true zero is 218 Yards.
Maximum point blank range is 248 yards.
58 Grain Bullet
Down Range
At 100
Yards
At 200
Yards
At 300
Yards
At 400
Yards
At 500
Yards
Trajectory in Inches: + 0.8 + 0.4 - 3.7 - 12.6 - 28.1
Energy in Foot Pounds: 1,546 1,199 921 697 519
Predator Effectiveness: + + + + +
Good Deer Hunting Reload:
243 Winchester rifle cartridge manufacturer: Handload.
Bullet weight: 100 Grains.
Bullet ballistic coefficient: .430.
Bullet muzzle velocity: 3,107 Feet Per Second.
Bullet muzzle energy: 2,143 Foot Pounds.
Bullet trajectory is set at 2 inch mid-range rise.
Rifle true zero is 230 Yards.
Maximum point blank range is 267 yards.
100 Grain Bullet
Down Range
At 100
Yards
At 200
Yards
At 300
Yards
At 400
Yards
At 500
Yards
Trajectory in Inches: + 1.8 + 1.1 - 4.4 - 15.7 - 33.8
Energy in Foot Pounds: 1,843 1,580 1,347 1,142 962
Deer Effectiveness + + + - -
Good Deer Hunting Load:
243 Winchester rifle cartridge manufacturer: Hornady.
Bullet weight: 95 Grains.
Bullet ballistic coefficient: .355.
Bullet muzzle velocity: 3,185 Feet Per Second.
Bullet muzzle energy: 2,139 Foot Pounds.
Bullet trajectory is set at 2 inch mid-range rise.
Rifle true zero is 230 Yards.
Maximum point blank range is 267 yards.
95 Grain Bullet
Down Range
At 100
Yards
At 200
Yards
At 300
Yards
At 400
Yards
At 500
Yards
Trajectory in Inches: + 1.7 + 1.1 - 4.4 - 16.1 - 35.1
Energy in Foot Pounds: 1,784 1,478 1,217 992 802
Deer Effectiveness + + + - -
243 Winchester: Hunting & Ballistics.

243 Winchester / Specifications:
Rifle:
Barrel Length - 24".
Bore Twist Rate - 1 in 10".
Bore Groove Diameter - .243".
Cartridge:
Bullet Diameter - .243".
Primer Size - Large Rifle.
Primer Type - Standard.
Case Neck Diameter - .276".
Case Shoulder Diameter - .454".
Case Base Diameter - .471".
Case Rim Diameter - .473".
Trimmed Case Length - 2.035".
Maximum Case Length - 2.045".
Maximum Overall Length - 2.710".
Maximum Pressure - 60,000 Pounds Per Square Inch.
243 Winchester
Rifle 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
243 Winchester: 50 Yard Sight-In, Hornady Ammo, Remington Ammo, Winchester Ammo.

243 Winchester / Reloading:

Handloading For Accuracy - Brass - Primers - Powder - Bullets.

 For the Antelope, Hog, Blacktail, Whitetail or Mule Deer hunter hand-loading or reloading his or her own 243 Winchester ammunition, Accurates Magpro rifle powder does an impressive job of launching 100 grain .243" diameter bullets at high velocity. Accurates online reloading data shows that a 100 grain .243 diameter Sierra Boat-Tail Gameking bullet using 45.2 grains of Magpro powder can be driven to a velocity of 2,861 feet per second, loaded at a maximum length of 2.650". This load does not top out until the 100 grain bullet is at 3,107 feet per second in the 243 Winchester at a chamber pressure of 59,880 PSI. For the 100 grain bullet reload if you sighted your 243 Winchester deer rifle in dead on at 225 yards it would only be 2 inches high at 150 yards and only 2.9 inches low at 275 yards which would be an excellent deer load, this load still produces enough bullet energy at 350 yards to take deer with 1,235 foot pounds.

243 Winchester Handload Data:
Powder: Accurate Magpro.
Bullet: Sierra Gameking .243" diameter.
Primer: Remington 9 1/2 Large Rifle.
Cartridge Case: Winchester, 243 Winchester.
Cartridge Case Trimmed Length: 2.035".
Loaded Cartridge Overall Length: 2.650".
Test Barrel Length: 24".
Test Barrel Twist Rate: 1 in 10".
Handload Data Source: Accurate Reloading Data Center.
Sierra
Bullet
Weight
Grains
Sierra
Bullet
Sectional
Density
Sierra
Bullet
Ballistic
Coefficient
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
100 .242 .430 45.2 2,861 50.2 3,107 59,880
Short Range Ballistics Table For Above Handload:
Recommended
Cartridge
Usage:
Bullet
Weight
Grains
Bullet
Ballistic
Coefficient
Muzzle
Velocity
Fps.
Muzzle
Energy
Ft. Lbs.
Rifle
Zero
100 Yds.
Bullet
Drop
200 Yds.
Bullet
Drop
250 Yds.
Deer 100 .430 3,107 2,143 0 - 2.7" - 5.8"
Long Range Ballistics Table For Above Handload:
Bullet 100 yds. 200 yds. 300 yds. 400 yds. 500 yds. 600 yds. 700 yds.
Velocity Fps. 2,881 2,667 2,463 2,268 2,082 1,904 1,737
Energy Ft.lbs. 1,843 1,580 1,347 1,142 962 805 670
Trajectory + 1.4" 0 - 6.3" - 18.2" - 37.0" - 63.8" - 100.3"
Handload Maximum Effective Range For Deer: 350 Yards.
243 Winchester: Reloading.

.24" Caliber
243 Win.
6mm Rem.
243 WSSM
240 Wby. Mag.


Guns Directory:
Rifles
Ammunition
Rifle Dies
Rifle Brass
Rifle Bullets
243 Winchester / History / Rifles / Hunting / Specifications / Reloading.
.17 HM2, .17 HMR, .17 WSM, 5mm Rem. Mag., .22 BB Cap, .22 CB Cap, .22 Short, .22 Long, .22 LR, .22 WRF, .22 WMR.
17 Rem., 204 Ruger, 22 Hornet, 222 Rem., 223 Rem., 22-250 Rem., 220 Swift, 223 WSSM, 243 Win., 6mm Rem., 243 WSSM,
240 Wby. Mag., 250 Sav., 257 Roberts, 25 WSSM, 25-06 Rem., 257 Wby. Mag., 6.5 x 55mm Swedish Mauser, 260 Rem.,
6.5mm Rem. Mag., 264 Win. Mag., 6.8 Rem., 270 Win., 270 WSM, 270 Wby. Mag., 7mm-08 Rem., 280 Rem., 7mm Rem. Mag.,
7mm WSM, 30-30 Win., 308 Win., 30-06 Sprg., 300 Win. Mag., 300 WSM, 300 Wby. Mag., 325 WSM, 338 Win. Mag.,
340 Wby. Mag., 357 Mag., 44 Rem. Mag., 444 Marlin, 45-70 Government.