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1-d.gif - 1035 Bytes300 Winchester Magnum: Reloading, Rifles, Ballistics, Hunting & Ballistics.
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Ballistics
Gunsmithing
Reloading
Shooting
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300 Winchester Magnum Reloading:

Bullet Diameter = .308".
Maximum Case Length = 2.620".
Trimmed Case Length = 2.610".
Primer Size = Large Rifle.
Maximum Cartridge Overall Length = 3.340".

Reloading Guide:
Centerfire Rifle Cartridges
Reloading Equipment Guide
Procedure Guide.
Accuracy
Brass
Primers
Powder
Bullets
Load Testing
Run-Out

 The 300 Winchester Magnum has always given top performance to those that handload their own ammunition for the simple fact you can tweak loadings for top performance. Hornady has seen fit to address this issue with their superformance ammunition offering loadings to boost performance for non-reloaders. The ballistics on these rounds are impressive breathing more fire into an already great cartridge. The following load data is a factory duplication load.

Superformance Duplication Load:
 For the Antelope, Hog, Blacktail, Whitetail or Mule Deer hunter hand-loading or reloading his or her own 300 Winchester Magnum ammunition, Western Powders, Ramshot Hunter rifle powder does an impressive job of launching 150 grain .308" diameter bullets at high velocity. Ramshots online reloading data shows that a 150 grain .308" diameter Hornady SST bullet using 69.9 grains of Ramshot Hunter powder can be driven to a velocity of 3,118 feet per second loaded at a maximum cartridge overall length of 3.340" in the 300 Winchester Magnum. This load does not top out until the 150 grain bullet is at 3,408 feet per second at a chamber pressure of 63,982 P.S.I..

 For the 150 grain bullet reload if you sighted your 300 Winchester Magnum hunting rifle in dead on at 245 yards it would only be 2 inches high at 150 yards and only 3.0 inches low at 300 yards which would be an excellent Antelope, Hog, Blacktail Deer, Whitetail Deer or Mule Deer load.

Load Data:
Test Powder Used = Ramshot Hunter.
Test Bullet Used = Hornady / Type = SST / Diameter = .308".
Test Primer Used = Federal 215.
Test Case Used = Winchester.
Test Case Trimmed Length = 2.610".
Loaded Cartridge Overall Length = 3.340".
Test Barrel Length = 24".
Test Barrel Twist Rate = 1 in 10".
Hornady
Bullet
Weight
Grains
Hornady
Bullet
Sectional
Density
Hornady
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.
150 .226 .415 69.9 3,118 77.7 3,408 63,982


Load Data Ballistics:
Rifle Barrel Length: 24 Inches.
Rifle scope mounted 1.8 inches above bore center-line.
Note: (Fps. = Feet Per Second.) (Ft. Lbs. = Foot Pounds.) (In. = Inches.)
Range: Muzzle100 yds. 200 yds. 300 yds. 400 yds. 500 yds. 600 yds.
Velocity Fps.: 3,408 3,157 2,922 2,698 2,485 2,282 2,088
Energy Ft.Lbs.: 3,868 3,320 2,843 2,424 2,057 1,735 1,453
Trajectory In.: - 1.8" + 1.0" 0 - 5.1" - 15.0" - 30.5" - 52.7"

Online Reloading Data References:
Hodgdon Reloading Data Center: The reloading data information displayed on this site, including ballistic data, was derived from tightly controlled laboratory conditions, by ballisticians and expert handloaders. Lists pressure test results as well. Data for Hodgdon Rifle Powder, IMR Rifle Powder & Winchester Rifle Powder.

Accurate Reloading Data Center: The reloading data information displayed on this site, including ballistic data, was derived from tightly controlled laboratory conditions, by ballisticians and expert handloaders. Lists pressure test results as well. Accurate is an exclusive brand of Western Powders Incorporated.

Ramshot Reloading Data Center: The reloading data information displayed on this site, including ballistic data, was derived from tightly controlled laboratory conditions, by ballisticians and expert handloaders. Lists pressure test results as well. Ramshot is an exclusive brand of Western Powders Incorporated.











Centerfire Rifle Caliber Ballistics - .17" - .20" - .22" - .24" - .25" - .26" - .27" - .28" - .30" - .31" - .32" - .33" - .35" - .37" - .41" - .43" - .45" - .51".
223 Rem., 243 Win., 25-06 Rem., 6.5 x 55mm, 270 Win., 7mm Rem. Mag., 30-30 Win., 308 Win., 30-06, 300 Win. Mag..
Reloading - Equipment - How To - Accuracy - Brass - Primers - Powder - Bullets - Load Testing - Run-Out.
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, 260 Rem., 6.5mm Rem. Mag., 264 Win. Mag., 6.8 Rem.SPC, 270 Win., 270 WSM,
270 Wby. Mag., 280 Rem., 7mm Rem. Mag., 7mm WSM, 30-30 Win., 308 Win., 30-06, 300 Win. Mag., 300 WSM, 300 Wby. Mag., 325 WSM, 340 Wby. Mag.,
357 Mag., 44 Mag., 45-70 Government.