.308 Winchester Load Data – .308 Winchester Reloading Data

Locating accurate .308 Winchester load data is essential for maximizing the exceptional versatility and inherent precision of this legendary short-action cartridge.

This guide compiles comprehensive .308 Winchester reloading data to help you safely develop the perfect load for your precision rifle, hunting setup, or semi-automatic platform.

Whether you are loading lightweight 150-grain hunting projectiles or heavy 175-grain match bullets, always cross-reference these published figures before charging your cases.

.308 Winchester Load Data

Bullet	Bullet Weight	Powder	Published Starting Load	Published Maximum Load	Published Velocity	Barrel Length / Firearm	Source
Hornady SST	150 gr	Varget	44.0 gr	47.0C gr (58,000 PSI)	2,700 – 2,900 fps	24″ / Universal Receiver	Hodgdon
Sierra MatchKing	168 gr	IMR 4064	41.5 gr	45.9C gr (59,000 PSI)	2,550 – 2,750 fps	24″ / Universal Receiver	Hodgdon
Nosler Partition	165 gr	BL-C(2)	44.0 gr	48.0 gr (58,500 PSI)	2,600 – 2,800 fps	24″ / Universal Receiver	Hodgdon
Barnes TTSX	150 gr	CFE 223	47.0 gr	51.0 gr (60,500 PSI)	2,800 – 3,000 fps	24″ / Universal Receiver	Hodgdon
Hornady ELD Match	178 gr	Reloder 15	40.5 gr	44.5 gr	2,500 – 2,680 fps	24″ / Universal Receiver	Alliant Powder

.308 Winchester Reloading Data

Bullet	Bullet Weight	Powder	Published Starting Load	Published Maximum Load	Published Velocity	Barrel Length / Firearm	Source
Sierra GameKing	150 gr	IMR 4895	42.5 gr	46.5 gr	2,650 – 2,850 fps	24″ / Universal Receiver	Sierra Bullets
Nosler AccuBond	165 gr	Varget	42.0 gr	46.0C gr (59,500 PSI)	2,600 – 2,750 fps	24″ / Universal Receiver	Hodgdon
Sierra MatchKing	175 gr	IMR 4064	41.0 gr	45.6C gr (59,800 PSI)	2,500 – 2,700 fps	24″ / Universal Receiver	Hodgdon
Hornady InterLock	150 gr	Ramshot TAC	41.5 gr	45.5 gr	2,700 – 2,880 fps	24″ / Universal Receiver	Western Powders
Berger VLD Target	185 gr	Reloder 17	42.5 gr	46.0 gr	2,500 – 2,650 fps	24″ / Universal Receiver	Berger Bullets

Understanding the .308 Winchester Reloading Data

Reading .308 Winchester reloading data requires paying close attention to minimum and maximum charge weights, as well as the specific brass being utilized. The tables above provide a baseline for safe load development in standard commercial brass cases. Because the .308 Winchester is virtually identical in exterior dimensions to the 7.62x51mm NATO military cartridge, reloaders often use surplus military brass. Military brass features thicker case walls, which significantly reduces internal powder capacity and causes dangerous pressure spikes if loaded with maximum commercial powder charges.

.308 Winchester Bullet Weight Reloading Data

The .308 Winchester is incredibly versatile, utilizing .30-caliber (.308 diameter) bullet weights ranging from 110 grains up to 200 grains. For deer hunting and general target practice, the 150-grain bullet is the undisputed standard, offering excellent velocity and a flat trajectory. The true sweet spot for accuracy and ballistic performance, however, lies with the 165-grain, 168-grain, and 175-grain projectiles. These heavier bullets boast superior ballistic coefficients and are the legendary foundation of modern police and military sniper rounds.

.308 Winchester Powder Reloading Data

Powder selection for the .308 Winchester is heavily anchored by medium-burn-rate rifle propellants that provide perfectly consistent case fill and temperature stability. Extruded powders like Varget, IMR 4064, and IMR 4895 are historically and currently the most trusted choices for this cartridge, delivering world-class accuracy. Spherical powders such as BL-C(2), CFE 223, and Ramshot TAC meter exceptionally well through standard powder drops and often yield slightly higher maximum velocities.

.308 Winchester Bullet and Powder Combinations

Pairing the right bullet with the appropriate powder is critical for unlocking the .308 Winchester’s famous precision. A 168-grain or 175-grain Sierra MatchKing seated over a charge of Varget or IMR 4064 is one of the most thoroughly proven accuracy recipes in reloading history. When loading lightweight 150-grain hunting bullets, reaching for spherical powders like CFE 223 or BL-C(2) frequently provides the maximum velocity necessary for devastating terminal expansion.

.308 Winchester Velocity From Published Data

Published velocity figures for the .308 Winchester strike a perfect balance between kinetic energy and manageable recoil. Pushing a 150-grain hunting bullet past 2,800 fps is easily achievable, providing an excellent trajectory out to 300 yards. When driving heavy 168-grain or 175-grain match bullets, velocities comfortably settle into the 2,600 to 2,700 fps range. These speeds ensure the heavy projectiles remain supersonic well past 800 yards, guaranteeing reliable aerodynamic stability.

.308 Winchester Reloading Data by Barrel Length

Most published load data for the .308 Winchester is gathered using a 24-inch laboratory test barrel. However, the cartridge is famous for its efficiency in shorter barrels. Tactical and hunting rifles commonly feature 20-inch or even 16-inch barrels. If you are shooting a 20-inch barrel, expect a minor velocity loss of roughly 20 to 25 fps per inch of reduced barrel length. The powder charge should never be pushed past published maximums to compensate for a shorter barrel.

.308 Winchester Energy and Ballistics

The .308 Winchester delivers outstanding kinetic energy, typically generating over 2,600 foot-pounds at the muzzle. While it does not offer the laser-flat trajectories of modern magnum cartridges, its ballistics are incredibly predictable, making it a favorite for long-range precision shooters. The cartridge easily bucks the wind with heavy, high-BC bullets and delivers consistent terminal performance on medium to large game out to 400 yards.

.308 Winchester Hunting Applications

The .308 Winchester is arguably the most popular and successful short-action big game hunting cartridge in North America. Loaded with 150-grain to 165-grain expanding bullets like the Nosler Partition, Barnes TTSX, or Hornady SST, it is highly effective on whitetail deer, mule deer, feral hogs, black bear, and elk. It provides deep penetration and massive hydrostatic shock without the punishing shoulder recoil or excessive meat damage associated with larger magnums.

Manufacturer Data vs. Independent Testing

Because the .308 Winchester is so widely used, the internet is flooded with independent forum load recipes, many of which ignore pressure signs in pursuit of higher velocity. Manufacturer data from Hodgdon, Sierra, or Hornady is gathered using universally calibrated pressure barrels in climate-controlled laboratories, making it the only standard for safety. Always prioritize official manufacturer load data and remember to drastically reduce powder charges if you are loading into thick-walled 7.62x51mm NATO surplus brass.

.308 Winchester Pressure and Safety

The SAAMI Maximum Average Pressure (MAP) for the .308 Winchester is a robust 62,000 PSI. Because it operates at high pressures, small variations in seating depth, brass case capacity, or ambient temperature can cause dramatic pressure spikes. Always monitor your fired brass closely for flattened primers, cratering, heavy bolt lift, or ejector swipes, and never begin your load development at the published maximum charge.

Best Sources for .308 Winchester Reloading Data

The most reliable sources for .308 Winchester load data are the printed manuals and digital databases provided by major powder and bullet manufacturers. The Hodgdon Reloading Data Center offers extensive, free digital tables covering a massive array of modern propellants. Additionally, the Sierra Reloading Manual and the Hornady Handbook of Cartridge Reloading provide safe, thoroughly tested recipes specifically tailored to their iconic match and hunting projectiles.

Frequently Asked Questions

Where can I find .308 Winchester reloading data?

You can find accurate .308 Winchester reloading data in published manuals from Sierra, Hornady, and Nosler, or digitally on the official Hodgdon Reloading Data Center website.

What powders are listed in published .308 Winchester data?

Commonly listed medium-burn-rate powders include Varget, IMR 4064, IMR 4895, Reloder 15, BL-C(2), CFE 223, and Ramshot TAC.

What bullet weights are covered in these tables?

These tables primarily cover the optimal .30-caliber bullet weights for the cartridge, ranging from 150-grain hunting projectiles to heavy 185-grain long-range match bullets.

Does barrel length affect .308 Winchester velocity?

Yes, shooting from a tactical 20-inch barrel rather than a standard 24-inch test barrel will typically result in a velocity loss of approximately 20 to 25 feet per second per inch.

Can I use standard rifle primers for .308 Winchester?

Yes, standard large rifle primers are universally used, though some reloaders prefer large rifle magnum primers when using certain spherical ball powders in extreme cold.

What is the difference between .308 Winchester load data and reloading data?

There is no practical difference; both terms refer to the precise recipes of powder charges, bullet weights, and primers required to safely assemble the ammunition.

Why do published velocity figures differ between sources?

Velocity figures differ because testing facilities use varying specific test barrels, environmental conditions, brass lot capacities (especially commercial vs. military brass), and primer types during their distinct protocols.

Should I use the maximum published load?

You should never start with the maximum published load; always begin with the minimum recommended starting charge and carefully work up while monitoring your brass for pressure signs.

Can I use data from one bullet manufacturer for another bullet?

You should only use data specifically designed for the exact bullet you are loading, as variations in bullet bearing surface length and overall profile drastically alter internal case capacity and chamber pressure.

Where should I verify .308 Winchester load data before reloading?

You should strictly verify all load data against an official, recently published manufacturer manual or a powder company’s official online database before assembling any ammunition.