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  • Post category:Ammunition / Rifle Ammunition
  • Post last modified:April 6, 2024
  • Post published:October 9, 2022

Best 7mm STW Ammo

What is 7mm STW ammo?🧐

It is a powerful rifle cartridge designed for long-range shooting and hunting. It was introduced by Layne Simpson and gunsmith Robby Roberts in the early 1990s. The cartridge is based on the .375 H&H Magnum case, necked down to accept 7mm (.284-inch) bullets. It offers higher muzzle velocity and greater energy compared to many other 7mm cartridges, which translates to flatter trajectories, better energy retention at long ranges, and improved terminal ballistics.


The 7mm STW (Shooting Times Westerner) ammunition is known for its powerful performance and long-range capabilities. Here are some key features:

☑️ High Velocity: This cartridge is designed to achieve high muzzle velocities, which results in flatter trajectories and better downrange energy retention. This makes it effective for long-range shooting and hunting.

☑️ Excellent Ballistics: It offers impressive ballistic coefficients (BC) for its bullets. This means that it maintains velocity and energy better than many other cartridges, reducing the effects of wind drift and bullet drop.

☑️ Effective Energy Transfer: The 7mm STW delivers substantial energy upon impact, making it effective for taking down large game animals. Its combination of high velocity and suitable bullet selection contributes to reliable terminal performance.

☑️ Recoil: Due to its high velocities and powerful nature, this ammo generates significant recoil. Shooters using firearms chambered in this cartridge should be prepared to manage the recoil, potentially requiring a recoil-reducing stock or other measures.

☑️ Reloadability: Reloaders who are experienced in handloading ammunition can customize their 7mm STW loads to suit their preferences. This can help optimize accuracy and performance for specific shooting scenarios.

Our Top Pick
SBT – Hornady Precision Hunter – 7mm STW – 162 Grain – 20 Rounds
The intricately designed streamlined ogive and optimized boattail configuration, combined with highly concentric AMP bullet jackets and the innovative heat shield tip, together create a bullet that boasts unmatched aerodynamic efficiency. This design has been meticulously crafted for match-level accuracy in hunting scenarios. During our analysis of high-velocity impacts within the 0-400-yard range, a remarkable pattern emerged. The bullet consistently expands along its path of penetration, offering a reliable and controlled performance. This can be attributed to the thick shank of the jacket and the highly effective InterLock ring, working in unison to retain an impressive 50-60% of the bullet's weight.
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The 7mm Shooting Times Westerner ammunition offers several benefits that make it attractive to shooters and hunters searching for high-performance cartridges. Some of the key benefits include:

✴️ The 7mm STW is designed for long-range shooting and hunting. Its high muzzle velocity and ballistic efficiency result in flatter trajectories, reduced bullet drop, and minimal wind drift. This enhances accuracy and makes it easier to engage targets at extended distances.

✴️ Shooters can choose from a variety of bullet types, including expanding bullets designed for hunting and high-ballistic-coefficient bullets for precision shooting. This allows users to tailor their ammunition to specific applications.

✴️ It is available with a range of bullet weights, enabling shooters to select the most appropriate weight for their intended use. Lighter bullets might be favored for long-range shooting, while heavier ones are commonly chosen for hunting larger games.

✴️ Shooters appreciate the 7mm STW’s inherent accuracy potential, which can be maximized with careful load development and proper marksmanship techniques. This makes it a favorite among precision shooters and long-range enthusiasts.

Benefits of 7mm Shooting Times Westerner ammunition

Best uses for this ammo🧩

As we delve into the world of firearms and ammunition, we can’t help but be intrigued by the remarkable capabilities of the 7mm STW (Shooting Times Westerner) ammo. Let’s talk about how this ammunition brings both power and precision to the table, offering a range of applications that cater to your shooting needs.

🎯 Long-Range Hunting: Imagine standing amidst the vast wilderness, aiming for that perfect shot at an elusive game like elk, moose, or deer. It steps up to the plate with its high velocity and flat trajectory, making those extended shots more accurate than ever.
🎯 Open Terrain Adventures: Picture expansive hunting grounds, where the distance between you and your target can be quite challenging. This ammo truly shines in these settings, combining its impressive speed and accuracy to help you take down your prey with confidence.
🎯 Mountainous Pursuits: If mountain hunting is your passion, you know that the terrain can be as tough as the game you’re after. The 7mm STW has the energy and precision needed to make those challenging shots count, even in rugged landscapes.
🎯 Precision Shooting Competitions: For those who enjoy the thrill of competition, its outstanding accuracy over long distances makes it a valuable asset. Whether you’re hitting targets at varying ranges, this ammo’s ballistic performance keeps you at the top of your game.
🎯 Target Shooting Thrills: There’s a unique satisfaction in nailing long-range targets or hitting steel with precision. This cartridge offers a rewarding experience for enthusiasts who love the challenge and excitement of such endeavors.
🎯 Embracing Challenges: If you’re a hunter who seeks the thrill of demanding hunts, where precision is paramount, the 7mm STW steps up to the plate. Its prowess in accuracy is your trusty companion on those exhilarating quests.

📌 Remember, the ammo’s exceptional performance is matched by its recoil, so don’t forget to consider proper recoil management to ensure a comfortable shooting experience. And, as always, safety should be your constant companion whenever you handle firearms and ammunition.

Best uses for this ammo

Best 7mm STW Ammo Reviews

1# SBT – Nosler – 7mm STW – 175 Grain – 20 Rounds

SBT - Nosler - 7mm STW - 175 Grain - 20 Rounds

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Introducing the Nosler Trophy Grade Long Range AccuBond Ammo in 7mm STW. This ammo is loaded with Nosler’s new AccuBond bonded core bullet, which has been proven to shoot faster and farther than any other bonded bullet on the market. The unique design of the AccuBond bullet provides exceptional in-flight stability and rapid deformation upon impact, making it the perfect choice for long-range shooting. Our research has shown that the boat tail design acts as a brake to reduce hind end drag without loss of energy, and the polycarbonate nose and long taper window of the AccuBond-LR allow for in-flight stability and rapid deformation. This is truly premium ammunition, and it will provide you with the accuracy and stopping power you need to make those long-range shots. Order your 20-round box of ammo today!

  • Sleek profile
  • Flatter trajectory
  • Superior stopping power
  • Made with the latest technology
  • May be too powerful for some applications


2# SBT – Nosler – 7mm STW – 160 Grain – 20 Rounds

SBT - Nosler - 7mm STW - 160 Grain - 20 Rounds

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Searching for high-quality, dependable ammunition for your next hunt? Look at this ammunition. It is manufactured to strict tolerances and inspected by hand to ensure top quality. Featuring Nosler Custom brass and the trusted AccuBond bonded core bullet, Trophy Grade ammo is sure to deliver superior performance in the field. Thanks to the bonding process that eliminates voids in the bullet core, the AccuBond bullet penetrates deep and retains 60-70% of its weight after impact. With a muzzle velocity of 3075 fps, this 7mm STW round is perfect for a take-down large game. Don’t settle for second best – order Nosler Trophy Grade ammunition today.

  • Accurate
  • Good penetration
  • Great for deer hunting
  • Can be expensive


3# SBT – Hornady Precision Hunter – 7mm STW – 162 Grain – 20 Rounds

SBT - Hornady Precision Hunter - 7mm STW - 162 Grain - 20 Rounds

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Hornady’s SBT line of ammunition is designed for accuracy and terminal performance, making it the perfect choice for hunters. As a result of using this product, we found that the ELD-X bullet offers incredible ballistic potential, while the heat shield tip helps to maintain its aerodynamic efficiency. These features combine to make the SBT line one of the best hunting ammunition options on the market today. Don’t miss the opportunity to get an excellent performance – order this ammo just now!

  • Highly accurate
  • Heat shield tip helps to maintain aerodynamic efficiency
  • Controlled expansion with a large mushroom and 85-90% retained weight
  • Deep penetration and large cavities
  • Bullets may be less accurate than others


4# SBT – Federal Premium – 7mm STW – 160 Grain – 20 Rounds

SBT - Federal Premium - 7mm STW - 160 Grain - 20 Rounds

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The Federal PremiumSBT–7mm STW–160 Grain–20 Rounds is the perfect choice for the serious hunter who demands surgical accuracy and terminal results. The tough and accurate Trophy Bonded Tip combines bonded construction with a bone-crushing solid copper shank and boat-tail design to tighten groups. The resulting polymer tip is tough and accurate, making it a perfect choice for the full spectrum of medium and big games at any practical range. Don’t wait – order this ammunition just now!

  • Surgical accuracy
  • Bonded construction and a bone-crushing solid copper shank
  • Boat-tail design and polymer tip
  • A perfect choice for the full spectrum of medium and big game at any practical range
  • May not be available at local stores


5# JSP HSM – 7mm STW – 175 Grain

JSP HSM - 7mm STW - 175 Grain

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Need top-quality Rifle Ammo? Pay attention to the Hsm Ammunition Hsm Ammo 7mm Stw 175gr. Pointed Soft Point 20-pack! This superb product is formulated with only the most durable and dependable components, ensuring that it will give you years of reliable performance. HSM Ammunition has been in the business of developing top-quality products for a long time, and this product is their way of showing just how much they care about their customers. With its superior design and craftsmanship, this ammunition is sure to be a welcome addition to your collection!

  • Durable and reliable
  • Excellent craftsmanship
  • Perfect for hunting
  • May not provide long-term reliability


Tips for optimal ammo performance💡

Let’s dive into some valuable tips that can help you achieve optimal performance when using 7mm STW ammo. Whether you’re a seasoned shooter or just getting started, these pointers will enhance your shooting experience:

💥 Quality Ammunition Selection: Choose reputable manufacturers known for producing high-quality 7mm STW ammunition. Trusted brands often ensure consistent performance and reliable ballistics.
💥 Match Bullet Weight to Purpose: Different bullet weights are suitable for varying applications. Lighter bullets might offer flatter trajectories for target shooting, while heavier bullets are ideal for hunting larger games.
💥 Consistent Bullet Seating: When reloading, ensure that bullets are seated at a consistent depth. This consistency promotes accuracy and uniform ballistics, minimizing shot-to-shot variation.
💥 Precision Reloading: If you’re into handloading, focus on precision. Accurate powder charges and careful case preparation contribute to consistent and predictable performance.
💥 Optimal Twist Rate: Check your rifle’s twist rate and match it with the appropriate bullet weight. An optimal twist rate stabilizes the bullet, leading to improved accuracy at longer distances.
💥 Recoil Management: Due to its power, the 7mm STW generates substantial recoil. Use proper shooting techniques, consider recoil-reducing accessories, and practice to manage recoil effectively.
💥 Barrel Care: Regularly clean and maintain your rifle barrel. A clean barrel ensures consistent accuracy by preventing fouling and buildup that can affect bullet flight.
💥 Optics and Scope Calibration: Invest in high-quality optics and ensure your scope is properly calibrated. Precise optics are essential for accurately placing shots at extended ranges.
💥 Ballistic Data and Charts: Keep ballistic charts or apps handy to quickly reference bullet drop and windage at different distances. This helps you make on-the-fly adjustments in the field.
💥 Consistent Shooting Fundamentals: Focus on consistent shooting fundamentals, including proper breathing, trigger control, and sight alignment. These basics significantly impact accuracy, especially at longer ranges.
💥 Range Practice: Regularly practice shooting at various distances to become intimately familiar with your rifle’s performance and the trajectory of your chosen ammunition.
💥 Test Different Loads: Experiment with different loads and bullet types to find the one that performs best in your rifle. Not all rifles respond the same way to every load.
💥 Weather Considerations: Keep an eye on weather conditions, as temperature, humidity, and wind can all influence bullet flight. Make necessary adjustments for accurate shots.
💥 Patience and Experience: Achieving optimal performance takes time and experience. Don’t be discouraged by challenges; instead, view them as opportunities to refine your skills.
💥 Safety First: Above all, prioritize safety. Always adhere to safe firearm handling practices, wear appropriate protective gear, and shoot within your skill level.

❗ By incorporating these tips into your shooting routine, you’ll unlock the full potential of your ammo and enjoy improved accuracy and performance. Remember, shooting is a journey, and each step you take to refine your skills brings you closer to becoming a more proficient marksman!

Performance of 7mm STW ammo


What is the best twist rate for 7mm STW?

🟣 The best twist rate for a rifle barrel depends on the specific bullet weight and type you intend to use. Twist rate refers to the rate of rotation the rifling imparts on the bullet as it travels down the barrel. The goal is to have a twist rate that stabilizes the bullet for optimal accuracy.

✅ For 7mm STW, a common and often effective twist rate is around 1:9 or 1:9.5. This means that the bullet completes one full rotation in the specified number of inches. However, the “best” twist rate can vary based on the bullet weight you plan to use.

Lighter Bullets: If you intend to shoot lighter bullets, such as around 140 to 150 grains, a twist rate of 1:9.5 or even 1:10 might be suitable. These lighter bullets don’t require as much rotational stability and can perform well with slightly slower twists.

Heavier Bullets: If you’re planning to shoot heavier bullets, in the range of 160 to 175 grains or more, a twist rate of 1:9 could be more appropriate. Heavier bullets tend to be longer and may require a faster twist to stabilize them effectively.

✒️ It’s important to note that barrel length can also influence the ideal twist rate. Longer barrels might allow slightly slower twists to stabilize bullets effectively. Additionally, the specific design and profile of the bullet (like the length, shape, and type of ogive) can impact the stability requirements.

How fast is it?

❇️ The velocity of a 7mm STW cartridge depends on several factors, including the specific load used and the bullet weight. Different manufacturers offer various ammunition options with varying velocities. Here are some approximate velocity ranges for common bullet weights:

🔷 140-grain bullets: Velocity can range from around 3,200 to 3,400 feet per second (fps) at the muzzle.

🔷 160-grain bullets: Velocity can range from around 3,000 to 3,200 fps at the muzzle.

🔷 175-grain bullets: Velocity can range from around 2,800 to 3,000 fps at the muzzle.

📌 Additionally, velocity can change with barrel length, atmospheric conditions (altitude, temperature, etc.), and individual rifles. For precise and up-to-date velocity information, referring to the manufacturer’s specifications or conducting velocity tests with your specific setup is recommended.

Is 7mm STW the same as 7mm Rem Mag?

🤨 No, they are not the same cartridges. While they share the same bullet caliber of 7mm (0.284 inches), they are distinct cartridges with different specifications and performance characteristics.

🟦 7mm STW (Shooting Times Westerner):

✔️ The 7mm STW is a relatively newer cartridge, introduced in the early 1990s.

✔️ It is based on a necked-down .375 H&H Magnum case.

✔️ The 7mm STW is known for its high muzzle velocity and excellent long-range performance, making it suitable for hunting large game at extended distances.

✔️ It’s a powerful cartridge that offers flatter trajectories and strong terminal ballistics.

🟦 7mm Remington Magnum (7mm Rem Mag):

✔️ The 7mm Rem Mag is one of the most popular and widely used magnum cartridges in the shooting world.

✔️ It was introduced by Remington in 1962.

✔️ The cartridge is based on a necked-down .375 H&H Magnum case as well, similar to the 7mm STW.

✔️ The 7mm Rem Mag offers strong performance for hunting and long-range shooting, with a good balance between recoil and power.

✔️ It’s known for its versatility and is used for a wide range of game animals.

📌 While both cartridges share similarities in terms of caliber and parent case, their performance characteristics, intended uses, and popularity in the shooting community differ. It’s important to choose the cartridge that best fits your shooting or hunting needs based on the specific ballistics, recoil, and ammunition availability that you’re looking for.

What does STW mean in ammo?

🟣 In the context of ammunition, “STW” stands for “Shooting Times Westerner.”

➡️ It refers to a family of cartridges that were developed by Layne Simpson and gunsmith Robby Roberts in the early 1990s. The concept behind the “Shooting Times Westerner” cartridges was to create powerful and high-velocity rounds that were well-suited for long-range shooting and hunting in the western United States, where open landscapes and longer shots are common.

➡️ The “STW” designation is often added to the name of the parent cartridge from which the new round is derived. For example, the 7mm STW is based on the .375 H&H Magnum case, necked down to accept 7mm (.284-inch) bullets. Similarly, there are other cartridges in the “STW” family, such as the .25 STW and the .30 STW, each with its unique characteristics and purposes.

⚡ Overall, the “STW” designation signifies cartridges that are designed to offer high velocity, flat trajectories, and strong performance at longer distances, particularly in the context of Western hunting and shooting scenarios.

How far will this cartridge shoot?

✳️ The effective shooting distance of a 7mm STW cartridge depends on several factors, including the specific load used, the bullet weight, the rifle setup, the shooter’s skill level, and the intended target. Here’s a general guideline:

🎯 It is capable of accurate shooting at distances of 1,000 yards (about 914 meters) and beyond, especially when using precision hand loads, proper rifle setup, and skilled marksmanship. While some shooters can push the cartridge to even greater distances, consistent accuracy at these ranges requires advanced skills, specialized equipment, and careful consideration of factors like wind, ballistics, and environmental conditions.

❗ It’s important to note that shooting at such extreme distances requires a deep understanding of ballistics, external factors, and a rifle that’s capable of consistent accuracy. Furthermore, safety considerations should always be a priority when engaging targets at extended ranges.

🎯 For hunting purposes, it’s common to engage games at distances of a few hundred yards, and the 7mm STW excels in these scenarios due to its flat trajectory and energy retention.

🔍 Remember that every rifle and load combination will have its unique characteristics, so the actual effective range can vary. If you’re interested in shooting at longer distances, consider seeking guidance from experienced long-range shooters, using ballistic calculators, and gaining hands-on experience to determine the maximum effective range of your specific setup.


7mm STW ammo is a great choice for anyone looking to purchase quality rounds for their rifle. It offers excellent accuracy and stopping power, making it perfect for hunting or self-defense situations. In this article, we have reviewed some of the best products on the market and shared some tips on shooting performance. We hope you found this information helpful and that it will assist you in choosing the right ammunition for your next hunt or shooting outing. Thanks for reading!😎👍

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Hector Richardson
Hector Richardson
7 months ago

Truth be told, I hadn’t come across this caliber before now, so I’m turning to those who might have more insight. My main intention for this rifle would be spring bear hunting, given that I do most of my hunting with a bow. I’m curious to know what the more experienced folks think about the 7mm STW. Your input would be greatly appreciated.

    7 months ago

    From what I’ve gathered (though I don’t own one myself), the 7mm STW appears to have originated as a “Wildcat” development by a well-known Gun Writer associated with Shooting Times Magazine. This cartridge aimed to elevate performance beyond that of the already popular 7mm Remington Magnum. The 7mm STW gained quite a following due to its impressive performance capabilities, leading it to transition from a round to one that started gaining recognition from arms manufacturers. This evolution is a familiar path seen with other successful rounds like the .22-250, .257 Roberts, and .25-06. Considering all this, if you come across a good opportunity to acquire a rifle in this caliber, along with a stash of ammunition or reloading capabilities, it might just be a worthwhile venture. The 7mm STW’s legacy and capabilities might still have something to offer in the right context.

      Quang Thompson
      Quang Thompson
      7 months ago

      I’ve got to concur here. The 7mm STW (Shooting Times Westerner) indeed traces its roots back to a wildcat creation by Layne Simpson, the name behind Shooting Times. Essentially, what you’re looking at is an 8mm Remington Magnum case that’s been gracefully necked down to accommodate a 7mm bullet. If memory serves me right, Layne Simpson put out an article about re-chambering a 7mm Rem Mag to this cartridge. That’s when the craze began – folks started clamoring for dies, reamers, and 8mm Rem Mag brass. The demand for 8mm Rem Mag brass got so intense that Remington initially assumed people were snapping up rifles chambered in 8mm Rem Mag. Not the case. Eventually, Remington embraced the 7mm STW and legitimized it as a factory cartridge. What you’ve got with it is a high-velocity, flat-shooting powerhouse tailored for the big game. The overbore nature of the cartridge demands a good amount of powder to squeeze out noteworthy velocity gains over the 7mm Rem Mag. But, if you’ve got the powder at your disposal, you’ll outpace the 7mm Rem Mag quite comfortably, especially when toting around heavier bullets. Just keep in mind, that it necessitates a full-length action – think along the lines of a 375 H&H length.

        Simon Campbell
        Simon Campbell
        7 months ago

        I recently acquired a pre-64 M70 rifle that has been re-barreled in 7mm STW. I found this gem at a local pawn shop and couldn’t resist the great deal. The rifle is in fantastic condition, and I’m excited about my purchase. While I’m already thrilled with my acquisition, I’m seeking some advice on the best factory ammunition currently available. My goal is to hit the shooting range while I work on developing a quality load. I’m determined to make my rifle as accurate as possible.

          7 months ago
          Reply to  Simon Campbell

          I did decide to build a 6.5×300 WSM for long-range antelope hunting. During one trip, I managed to take down two antelope at decent distances, including one near Gillette, Wyoming. But I learned that a 6.5×300 WSM with 140-grain bullets doesn’t quite match the capabilities of a 7 STW with SBT – Nosler – 7mm STW – 160 Grain – 20 Rounds when it comes to those extended shots. Once I realized this, I ended up selling the rifle. Each firearm has its strengths and limitations, and finding the right tool for the job and the range is essential.

            Octavio Lewis
            Octavio Lewis
            7 months ago
            Reply to  Simon Campbell

            I’ve got three 7mm Rem Mags and one 7mm STW in my collection. If I were in your shoes, I’d consider sticking with bullets ranging from 160 grains up to possibly 175 grains when exploring factory ammunition. My initial choice would probably be SBT – Nosler – 7mm STW – 160 Grain – 20 Rounds – they’ve yielded positive results for me before. Following that, I’d give SBT – Hornady Precision Hunter – 7mm STW – 162 Grain – 20 Rounds a shot. And if the journey continues, my next attempt might involve SBT – Nosler – 7mm STW – 175 Grain – 20 Rounds. My hunch is that one of these options will likely deliver sub-MOA three-shot groups. Best of luck!

              7 months ago
              Reply to  Simon Campbell

              My father, my uncle, and I embarked on a journey to build semi-custom 7mm STW rifles back in the early 90s. Over about two decades, we engaged in shooting and reloading for these rifles. Despite the time and experimentation it took, we eventually achieved outstanding results. All three rifles could consistently manage 1/2 MOA with the right load, although it required some trial and error. Interestingly, our rifles seemed to have their quirks and preferences. For my rifle, I discovered that careful control of neck tension to about 0.002 was the key to unlocking its best performance. Here’s to hoping you swiftly narrow down your options and find the sweet spot for your rifle. Remember, it’s all about patience, persistence, and that perfect recipe. Happy shooting!

                7 months ago

                I’m currently on a quest to discover the most accurate powders for my newly acquired 7mm STW rifle. It’s a Winchester Model 70 boasting a 26-inch barrel. In my initial outings, I went through the break-in phase using factory ammo. The groupings weren’t disappointing, but I have a strong feeling that there’s a lot more potential waiting to be unlocked once I zero in on the right powder. Any insights you can provide will be incredibly valuable.

                  Emerson Reed
                  Emerson Reed
                  7 months ago
                  Reply to  Revolution

                  My perspective is that this caliber truly comes alive with SBT – Federal Premium – 7mm STW – 160 Grain – 20 Rounds. When it comes to those, along with the 175-grainers, I’ve found it challenging to surpass the performance delivered by Retumbo or H5010 powders. Both of these options deliver maximum velocities while consistently producing remarkably tight groupings in my rifle.

                    7 months ago
                    Reply to  Revolution

                    When it comes to the 7mm STW, I’ve had a fair amount of success across different bullet weights. Among the powders I’ve tried, H4831, H1000, Reloder 19, and Reloder 22 have all shown their strengths with the 140-grain bullets, with H4831 emerging as the standout performer in that category. Shifting to the 150 and 160-grain bullets, I’ve been extremely pleased with the performance of IMR 7828, Reloder 19, and H1000. These powders have consistently delivered excellent results. What makes the 7mm STW stand out for me is its versatility – a range of different powders seem to work exceptionally well with this caliber.

                      Vander James
                      Vander James
                      7 months ago
                      Reply to  Revolution

                      I own two 7mm STWs and additionally reload for a friend who also uses this caliber. After plenty of experimentation, I’ve zeroed in on what I consider to be the optimal load. It involves 80.5 grains of R-22 powder paired with a 150-grain ballistic tip bullet. The incredible part is that this combination consistently produces groups under 0.25 inches across all three rifles. The velocity it achieves is quite impressive, resulting in substantial impact and, well, let’s just say the effect on deer is quite memorable.