About 300 Win Mag Ammo
Developed in the early 1960s by Winchester, 300 Winchester Magnum ammunition, commonly called the 300 Win Mag ammo, is a popular rifle cartridge renowned for its long-range performance and versatility.
Based on the .338 Winchester Magnum case, the 300 Win Mag round features a belted rim and a slightly shorter case length design, allowing for higher powder capacity and the ability to launch heavier bullets at higher velocities.
After its release, the .300 Win Mag quickly gained popularity among hunters and long-range shooters due to its flat trajectory, excellent terminal performance, and ability to handle various game animals.
Its versatility made it suitable for hunting applications, including big game, such as elk, moose, and bear, as well as long-range target shooting and tactical applications.
More recently, 300 Win Mag ammo has seen a new rise in popularity since the U.S. Army started converting its sniper rifles from .308 Winchester to the .300 WM cartridge – which can engage targets of human size at ranges as great as 1,200 meters.
Competitive shooters also have warmed up to the 300 Win Mag, as they prefer the flatter trajectory of 300 Win Mag compared to 308.
In fact, Federal 300 Win Mag Gold Medal Match ammo is some of the most accurate on the market and is frequently used at shooting matches nationwide.
Today, 300 Win Mag ammo is manufactured by all the top ammunition brands thanks to its power, accuracy, and versatility.
It is available in multiple variations and designs, from lighter options for long-range shooting to heavier projectiles for maximum energy transfer and penetration for big game hunting.
Common Names for 300 Win Mag
Since its release in 1963, 300 Winchester Magnum ammunition has had many different name variations. Some of the most common include:
- .300 Win Mag
- 300 WM
- 7.62x67mm
- .300 Winchester
- 7.62x66mm
- .300 Win
- .300 Winchester Magnum
Regardless of your preferred nomenclature, 300 Win Mag Ammo has gained massive popularity over the years and is available in the lineup of every significant American ammo manufacturer.
Common Types of .300 Win Mag Ammo
Full Metal Jacket (FMJ)
FMJ ammunition features a soft lead core encased in a harder metal jacket. It is known for its penetration capabilities and is often used for target shooting and training purposes.
Soft Point (SP)
SP ammunition has a partially exposed lead tip with a soft lead core, covered by a harder metal jacket. It is designed for controlled expansion upon impact, making it suitable for hunting various game animals.
Hollow Point (HP)
HP ammunition has a hollowed-out tip designed to promote rapid expansion upon impact. This type of ammunition is commonly used for hunting and self-defense, as it delivers effective terminal performance.
Ballistic Tip
Ballistic Tip ammunition features a plastic polymer tip combined with a boat-tail design. This combination enhances ballistic performance by improving aerodynamics and providing rapid expansion upon impact.
Open Tip Match (OTM)
OTM ammunition is designed for precision shooting and long-range accuracy. It features an open tip but is not designed for expansion. OTM rounds are often used in competitive shooting and precision rifle applications.
Match Grade
Match-grade ammunition is manufactured to strict tolerances and is designed for exceptional accuracy and consistency. It is commonly used in competitive shooting and long-range precision shooting applications.
Why Choose .300 Win Mag Ammo?
.300 Winchester Magnum ammo is a go-to choice for shooters who demand superior long-range performance, exceptional terminal ballistics, and versatile application in both hunting and tactical environments, including military snipers, big game hunters, and competitive marksmen.
- Exceptional Long-Range Ballistics
- .300 Win Mag is built for distance. Its flat trajectory and high muzzle velocity make it ideal for targets well beyond 500 yards, with performance that rivals larger, heavier calibers.
- Whether you're shooting steel or stalking elk across open country, this magnum round offers the confidence and accuracy needed for tough shots.
- Trusted by Big Game Hunters
- Renowned for its stopping power, .300 Win Mag is a top choice for hunters pursuing large and rugged game such as elk, moose, bear, and mule deer.
- With bullet weights ranging from 150 to 220 grains, the cartridge provides deep penetration and consistent expansion, ensuring clean, ethical harvests in even the harshest environments.
- Precision Shooting & Versatility
- Not just for hunting, .300 Win Mag also excels in long-range competition and tactical applications.
- Its superior ballistic coefficient helps resist wind drift and ensures stable flight over extreme distances.
- Many law enforcement and military marksmen trust the .300 Win Mag in sniper platforms for its consistent, repeatable accuracy.
.300 Win Mag Ammo Features
VELOCITY
.300 Win Mag ammunition typically achieves high muzzle velocities, which contribute to its long-range capabilities. Depending on the bullet weight and specific load, velocities can range from around 2,900 feet per second (fps) to over 3,100 fps.
ENERGY
The .300 Win Mag features high muzzle energy for big game hunting. The energy levels can range from around 3,500 foot pounds (ft-lbs) to over 4,000 ft-lbs, depending on the bullet weight and load.
TERMINAL PERFORMANCE
Different types of .300 Win Mag ammunition offer varying terminal performance characteristics. Some bullets are designed for controlled expansion, deep penetration, and high weight retention, while others focus on rapid expansion and maximum energy transfer.
BALLISTIC COEFFICIENT (BC)
The ballistic coefficient measures the aerodynamic efficiency of a bullet. .300 Win Mag ammunition often features bullets with high BC values, contributing to better resistance against wind drift and flatter trajectory.
CARTRIDGE DESIGN
The 300 Win Mag ammunition has a belted case design featuring a distinctive belt near the base of the cartridge. This belt aids in head spacing and ensures reliable chambering and extraction.
AVAILABILITY
300 Win Mag ammo is widely available from numerous manufacturers, offering a range of loads, bullet types, and brands to cater to shooters' preferences and specific needs.
Popular 300 Win Mag Rifles
Savage Arms 110
The Savage Arms 110 is a popular bolt-action rifle known for its affordability and accuracy. It features a floating bolt head, adjustable triggers, and a wide range of configurations, making it suitable for various shooting applications.
Remington Model 700
The Remington Model 700 is a bolt-action rifle known for its accuracy, reliability, and extensive aftermarket support. It is available in various configurations, including hunting and tactical models, offering a wide range of options for shooters.
Winchester Model 7
The Winchester Model 70 is a classic bolt-action rifle with a long-standing reputation for quality and accuracy. It has been a popular choice among hunters and has undergone several iterations and improvements over the years.
Ruger Hawkeye
The Ruger Hawkeye is a bolt-action rifle known for its robust construction, smooth action, and excellent accuracy. It features a rugged design and is often favored by hunters and enthusiasts looking for a reliable and durable rifle.
Browning X-Bolt
The Browning X-Bolt is a modern bolt-action rifle with a reputation for accuracy and innovative features. It incorporates a unique three-lug bolt design, adjustable triggers, and a variety of stock options to suit different shooting preferences.
Weatherby Mark V
The Weatherby Mark V is a premium bolt-action rifle known for its craftsmanship, accuracy, and high-quality components. It features a strong action, fluted bolt, and a variety of stock options, appealing to shooters looking for a high-end rifle.
Best-Selling .300 Win Mag Ammo
Choosing the right .300 Win Mag ammunition is crucial for achieving long-range accuracy, consistent performance, and reliable terminal ballistics. Whether you're dialing in for a precision shooting competition or gearing up for a big game hunt, selecting ammo from proven brands ensures you get the most out of every shot.
At Ammunition Depot, you'll find a wide selection of top brands of .300 Win Mag ammunition, trusted by hunters, competitive marksmen, and tactical shooters around the world.
From hunting loads with powerful expansion to match-grade rounds engineered for pinpoint precision, we stock only the best to meet your shooting needs.
Hornady
Renowned for their innovative bullet designs, Hornady’s Precision Hunter and Superformance lines offer outstanding ballistic performance. Featuring ELD-X (Extremely Low Drag - eXpanding) bullets, Hornady delivers devastating accuracy and consistent expansion—perfect for long-range hunting.
Federal Premium
Federal’s Terminal Ascent and Gold Medal Berger lines are built for elite shooters. These loads provide exceptional accuracy, deep penetration, and high retained velocity, making them a favorite for both precision shooters and big game hunters.
Winchester
As the original developer of the .300 Win Mag cartridge, Winchester continues to lead the field with options like Deer Season XP and Ballistic Silvertip. Known for reliability and performance, Winchester ammo is a go-to for both recreational and professional shooters.
Nosler
A premium name in long-range and hunting ammunition, Nosler offers .300 Win Mag in their AccuBond, Ballistic Tip, and Trophy Grade series. Each round is loaded with high-performance projectiles designed for superior weight retention and controlled expansion, delivering precise results shot after shot.
Remington
Remington’s Core-Lokt and Premier Scirocco Bonded lines are among the most trusted by hunters for their proven knockdown power and rugged reliability. Their well-balanced loads provide smooth recoil and consistent performance in the field.
300 Win Mag Ammo FAQs
QUESTION: What is 300 Winchester Magnum ammunition?
ANSWER: .300 Winchester Magnum, or 300 Win Mag, is a rifle cartridge designed for long-range shooting and hunting. It offers a larger case capacity and higher muzzle velocities compared to other .30 caliber cartridges, delivering increased energy and excellent ballistic performance.
QUESTION: What are the typical uses for .300 Win Mag ammunition?
ANSWER: 300 Win Mag ammunition is primarily used for hunting large game. It is also used for long-range, target, and tactical applications due to its flat trajectory, excellent energy retention, and long-range accuracy.
QUESTION: Can 300 Win Mag ammunition be used for hunting?
ANSWER: Absolutely. .300 Win Mag is a popular choice for hunting larger game animals such as elk, moose, deer, and bear by providing reliable penetration and terminal performance for effective and ethical hunting.
QUESTION: Is .300 Win Mag suitable for long-range shooting?
ANSWER: Yes, 300 Win Mag is renowned for its long-range capabilities. It offers high muzzle velocity and excellent ballistic performance making it popular among precision shooters and long-range enthusiasts.
QUESTION: What are the advantages of using .300 Win Mag ammunition?
ANSWER: The .300 Win Mag offers long-range accuracy, flat trajectory, high muzzle energy, and versatility for hunting. Its powerful performance and ability to maintain energy at extended distances make it a preferred choice for hunters and long-range shooters.
QUESTION: Are there different types of .300 Win Mag ammunition?
ANSWER: Yes, .300 Win Mag ammunition comes in various types designed for specific purposes. Common types include Full Metal Jacket (FMJ) for target shooting, Soft Point (SP) for hunting, and Match Grade for precision shooting.
QUESTION: What are the typical bullet weights available for .300 Win Mag?
ANSWER: .300 Win Mag ammunition is available in various bullet weights, ranging from 150grain to 220grain or more. The choice of bullet weight depends on factors such as shooting application, target distance, and the game being hunted.
QUESTION: Can I reload 300 Win Mag ammunition?
ANSWER: Yes, 300 Win Mag cartridges can be reloaded, allowing shooters to customize their loads for specific purposes.
QUESTION: Is 300 Win Mag ammunition readily available?
ANSWER: Yes, 300 Win Mag ammo is widely available from nearly all the popular ammunition manufacturers. In addition, it can be purchased online or in most gun stores that sell ammunition.

