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308 Winchester - 7.62 NATO
Reloading - Hunting & Ballistics

308 Winchester Cartridge, Reloading:
 The 308 Winchester and 7.62 NATO are also known as their metric nomenclature; 7.62x51mm, which is a .30" caliber, rimless, bottleneck cartridge case design, centerfire rifle cartridge that is reloadable.
Centerfire Rifle Cartridge
Equipment - Process - Accuracy.
 The 7.62x51mm cartridge casing is reloadable after the cartridge has been fired or spent with various combinations of primer, powder and .308" diameter bullets.
Cartridge Case - Primer - Powder - Bullets
 Handloaders can quite handily calculate the kinetic energies of their handloads with the use of these formulas.

308 Winchester
Cartridge Specifications
:


Bullet Diameter - .308".
Primer Diameter - .210".
Primer Type - Large Rifle.
Case Neck Diameter - .343".
Case Shoulder Diameter - .454".
Case Base Diameter - .471".
Case Rim Diameter - .473".
Min. Case Length - 2.005" / Trimmed.
Max. Case Length - 2.015" / Stretched.
Min. Cartridge Loaded Length - 2.490".
Max. Cartridge Loaded Length - 2.810".
Max. Average Pressure - 62,000 PSI.
7.62 NATO
Cartridge Specifications
:


Bullet Diameter - .308".
Primer Diameter - .210".
Primer Type - Large Rifle.
Case Neck Diameter - .343".
Case Shoulder Diameter - .454".
Case Base Diameter - .471".
Case Rim Diameter - .473".
Min. Case Length - 2.005" / Trimmed.
Max. Case Length - 2.015" / Stretched.
Min. Cartridge Loaded Length - 2.490".
Max. Cartridge Loaded Length - 2.810".
Max. Average Pressure - 60,200 PSI.

 The 308 Winchester is beyond any doubt one of the most popular centerfire rifle cartridges in the world today. It is chambered in many different rifle and carbine actions; bolt-actions, pump-actions, lever-actions, break-actions and semi-auto-actions, barrel lengths are available from 16" to 26", common rifling twist rates are 1 in 10", 1 in 11" and 1 in 12".
Twist rates

 Handloaders have ample choices for loading their favorite bullet weights for many different tasks. From zombie slayers to woodchuck busters, lightweight bullets of 110 grain to 125 grain do quite well and probably better than most people know.

308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Barnes Bullet
Dia. Type Weight S.D. B.C.
.308" TTSX 110 .166 .295
Cartridge Overall Length = 2.700".
Winchester WLR Primer
Accurate 2200 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
43.8 3,168 48.7 3,448 61,753
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".
308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Nosler Bullet
Dia. Type Weight S.D. B.C.
.308" B-Tip 125 .188 .366
Cartridge Overall Length = 2.750".
Winchester WLR Primer
Accurate 2460 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
45.3 3,042 50.4 3,302 61,301
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".

 For the deer, elk or moose hunter hand-loading or reloading his or her own 308 Winchester ammunition, Western Powders, Accurate 2520 rifle powder does an impressive job of launching 150 grain .308" diameter bullets at high velocity. Accurates online reloading data shows that a 150 grain .308" diameter Hornady SST bullet using 44.5 grains of Accurate 2520 powder can be driven to a velocity of 2,770 feet per second loaded at a maximum cartridge overall length of 2.735". This load does not top out until the 150 grain bullet is at 3,006 feet per second at a chamber pressure of 61,771 PSI.
308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Hornady Bullet
Dia. Type Weight S.D. B.C.
.308" SST 150 .226 .415
Cartridge Overall Length = 2.735".
Winchester WLR Primer
Accurate 2520 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
44.5 2,770 49.4 3,006 61,771
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".
 For the 150 grain bullet reload if you sighted your hunting rifle in dead on at 220 yards it would only be 2 inches high at 150 yards and only 3.4 inches low at 275 yards which would be an excellent deer, elk and moose load.

 For large elk or moose, Western Powders, Accurate 2520 rifle powder does an impressive job of launching 165 grain .308" diameter bullets at high velocity for 308 Winchester handloaders. Accurates online reloading data shows that a 165 grain .308" diameter Sierra Gameking bullet using 42.9 grains of Accurate 2520 powder can be driven to a velocity of 2,636 feet per second loaded at a maximum cartridge overall length of 2.810". This load does not top out until the 165 grain bullet is at 2,861 feet per second at a chamber pressure of 61,834 PSI.
308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Sierra Bullet
Dia. Type Weight S.D. B.C.
.308" G-K 165 .248 .404
Cartridge Overall Length = 2.810".
Winchester WLR Primer
Accurate 2520 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
42.9 2,636 47.7 2,861 61,834
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".
 For the 165 grain bullet reload if you sighted your hunting rifle in dead on at 240 yards it would only be 3 inches high at 135 yards and only 3.0 inches low at 285 yards which would be an excellent elk and moose load.

 Handloaders of 308 Winchester cartridges have a couple good choices for loading heavier bullets that penetrate quite deep when used on large animals, 180 grain bullets can normally be driven fast enough to make it worth loading them for stopping power.

308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Speer Bullet
Dia. Type Weight S.D. B.C.
.308" SP 180 .271 .441
Cartridge Overall Length = 2.800".
Federal 210M Primer
IMR 4064 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
40.7 2,445 45.2 2,683 58,200
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".
308 Winchester Load Data:
Winchester Cartridge Case
Case Trimmed Length = 2.005".
Hornady Bullet
Dia. Type Weight S.D. B.C.
.308" SST 180 .271 .480
Cartridge Overall Length = 2.740".
Winchester WLR Primer
Accurate 2520 Powder
Powder
Start
Load
Grains
Start
Load
Velocity
Fps.
Powder
Maximum
Load
Grains
Maximum
Load
Velocity
Fps.
Maximum
Load
Pressure
P.S.I.
40.9 2,486 45.5 2,711 61,483
Ballistic Test Barrel Length = 24".
Ballistic Test Barrel Twist Rate = 1 in 12".

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