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  • Post category:Ammunition / Rifle Ammunition
  • Post last modified:April 5, 2024
  • Post published:September 30, 2022

Best 458 Socom Ammo

What is 458 Socom ammo?🤔

It is a specialized cartridge designed for the AR-15 platform. It was developed in the early 2000s by Marty ter Weeme, a member of the professional ammunition community, in response to the need for a more powerful cartridge that could provide increased stopping power and terminal performance compared to the standard 5.56mm NATO round used in the AR-15.

458 Socom ammo


The .458 Socom ammunition has several distinctive features that set it apart from other cartridges, particularly those designed for the AR-15 platform. Here are some key ones:

Stopping Power: The larger bullet size translates to increased stopping power and terminal ballistics compared to smaller caliber rounds. This makes it effective for hunting and self-defense applications, especially at short to medium distances.

Short-Range Performance: This ammunition is optimized for short to medium ranges. It’s often used in situations where quick target acquisition and stopping power are critical, such as hunting in dense vegetation or self-defense scenarios.

Recoil and Muzzle Energy: It generates more recoil and muzzle energy compared to lighter calibers. Shooters should be prepared for increased recoil when firing this cartridge.

Specialized Use: While this cartridge is versatile in terms of its stopping power, it’s particularly well-suited for hunting larger game, such as hogs and deer, as well as for personal defense in situations where overpenetration is less of a concern.

Our Top Pick
Grizzly – 458 Socom – 350 Grain – 20 Rounds
This ammunition has been meticulously crafted to offer an exceptional choice for those seeking reliable performance. It features a bonded flat-point bullet design, optimizing its performance for your shooting needs. The bullet carries a weight of 350 grains, ensuring a well-balanced blend of power and accuracy. The ammunition achieves a muzzle velocity of 1750 feet per second, ensuring solid performance upon firing. Tailored for target shooting, it is designed to meet the demands of precision and accuracy. Whether you're an avid target shooter or someone seeking dependable ammunition, this product provides a reliable solution for your shooting needs.
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458 Socom ammunition offers several benefits, particularly for individuals who seek enhanced stopping power and versatility in their firearms. Here are some of the key advantages:

🔷 This ammo is versatile in its applications. It can be used for hunting, self-defense, and tactical purposes. Its stopping power and terminal ballistics make it effective in various scenarios, including close-quarters encounters and medium-range engagements.
🔷 The larger bullet size and weight of such ammunition contribute to impressive terminal ballistics. This means the bullet can create larger wound channels and deliver more energy to the target, increasing the likelihood of incapacitation.
🔷 It can be used in AR-15 platforms with the appropriate barrel and bolt assembly changes. This allows shooters to adapt their existing AR-15 rifles for the .458 Socom cartridge, eliminating the need to purchase a completely new firearm.
🔷 The enhanced stopping power makes it a popular choice for hunting larger game, such as hogs and deer. It can deliver reliable performance for ethical and humane kills, especially at close distances.
🔷 For personal defense, this cartridge provides an excellent option for those who prefer a larger caliber with proven stopping power. It can be particularly effective in stopping threats quickly and decisively.

Benefits of 458 Socom ammunition

Bullet drop explained🎯

The bullet drop of a .458 Socom cartridge, or any other caliber, is influenced by various factors such as the bullet’s ballistic coefficient, muzzle velocity, and the distance at which the shot is taken.

❗ Keep in mind that actual bullet drop can vary significantly based on the specific load you’re using, as well as atmospheric conditions like air density, altitude, and wind. It’s always recommended to consult ballistic charts provided by ammunition manufacturers or use a ballistics calculator for accurate data.

🟣 As a rough example, let’s consider a scenario using a .458 Socom load with a 300-grain bullet traveling at an average muzzle velocity of around 1,900 feet per second:

  • At 100 yards: The bullet might experience a drop of around 2 to 4 inches.
  • At 200 yards: The bullet might drop around 10 to 14 inches from the line of sight.
  • At 300 yards: The bullet could experience a drop of approximately 24 to 30 inches.
  • At 400 yards: The bullet drop might be around 45 to 55 inches.

☑️ To get accurate information for your specific ammunition and rifle setup, you should consult the ammunition manufacturer’s ballistics data or use a ballistics calculator that takes into account the specific details of your load, rifle, and shooting conditions.

Best 458 Socom Ammo Reviews

1# Grizzly – 458 Socom – 300 Grain – 20 Rounds

Grizzly - 458 Socom - 300 Grain - 20 Rounds

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The Grizzly 458 Socom Ammo is just the thing you need for your next big hunting trip. This product is made with reliable and durable materials that will last you for years to come. With its 20 rounds, you’ll have plenty of opportunity to take down your prey. Based on our observations the jacketed hollow point bullet is designed to give you maximum accuracy, while the 300-grain weight ensures that you’ll have plenty of power behind each shot. The brass cartridge case is also built to last, so you can rest assured knowing that your ammo will be ready when you are.

  • Hard-kicker
  • Deep penetration
  • Reliable
  • Affordably priced
  • Reloadable
  • Not widely available


2# Grizzly – 458 Socom – 350 Grain – 20 Rounds

Grizzly - 458 Socom - 350 Grain - 20 Rounds

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The Grizzly 458 Socom 350 Grain Bonded Flat Point Ammunition is a top-quality product that is designed to provide years of reliable performance. Formulated using some of the most durable and reliable components available, this ammo is perfect for anyone searching for an outstanding option. This load offers accuracy, power, and terminal performance at a very competitive price, making it one of the best values on the market today. While 458 Socom is still not a SAAMI-adopted cartridge, it continues to grow in popularity year after year.

  • Devastating stopping power
  • Reloadable
  • Accurate
  • High-quality components
  • Might be hard to find


Reloading data📝

Reloading data for the .458 Socom cartridge provides specific instructions and guidelines for handloading your ammunition. It includes information about the components to use, such as the type of powder, bullet, primer, and casing, as well as recommended powder charges and overall cartridge length.

📢 It’s important to understand that reloading data is specific to each combination of bullet, powder, primer, and casing. Using the wrong components or exceeding recommended powder charges can result in dangerous situations. Always cross-reference data from multiple reputable sources, such as bullet and powder manufacturers, reloading manuals, and respected reloading guides. 📢 Additionally, start with the minimum powder charge recommended and work your way up while looking for signs of overpressure (e.g., flattened primers, difficult extraction) as you increase the powder charge. Safety is paramount when reloading, so take the time to thoroughly research and understand the process before attempting it on your own. If you’re new to reloading, consider seeking guidance from experienced reloaders or attending reloading workshops.

🧑‍🔧 Reloading process:

🛠️ Inspect and Clean Cases:  Inspect used cases for cracks, splits, or other defects. Clean cases using a tumbler or ultrasonic cleaner to remove dirt, residue, and debris.
🛠️ Resize and Deprime:  Lubricate the cases using a proper case lube. Resize the cases using the resizing die in your reloading press. Remove the spent primers using the decapping pin on the resizing die.
🛠️ Trim Cases (If Necessary): Measure the case length using calipers. Trim cases that have stretched beyond the recommended length.
🛠️ Prime Cases: Insert fresh primers into the priming tool and carefully seat them in the primer pockets.
🛠️ Charge Powder: Consult your reloading manual for recommended powder charges for your chosen bullet and powder. Use a powder scale to measure and dispense the correct powder charge into each case.
🛠️ Seat Bullets:  Set up the bullet seating die in your reloading press. Adjust the die to achieve the proper bullet seating depth, following the specifications from your reloading manual. Place a bullet on each charged case and gently lower the press handle to seat the bullet.
🛠️ Check and Confirm:  Double-check all cases to ensure they have the correct powder charge and bullet. Use a caliper to measure the overall length of the cartridges and compare them to the recommended specifications.
🛠️ Crimp (If Necessary):  Some cartridges, depending on the bullet and case combination, may require crimping to secure the bullet in the case’s mouth. Follow your reloading manual’s instructions for crimping.
🛠️ Final Inspection: Inspect all loaded cartridges one final time to ensure consistency, proper bullet seating, and overall length.

❗ If you’re working up a new load, start with the minimum powder charge recommended in your reloading manual. Gradually increase the powder charge while searching for signs of pressure. Test your hand loads for accuracy and performance at the range.


Which caliber is better: .450 Bushmaster vs. .458 Socom?

🟪 The choice between .450 Bushmaster and .458 Socom depends on your intended use, preferences, and specific requirements. Both cartridges offer increased stopping power compared to standard AR-15 calibers like .223/5.56mm, making them suitable for hunting, self-defense, and other applications. Let’s compare them in several aspects:

➡️ Stopping Power: Both cartridges are designed for enhanced stopping power compared to smaller calibers. The .458 Socom generally has a larger bullet diameter (0.458 inches) compared to the .450 Bushmaster (0.452 inches), which might result in slightly more energy transfer upon impact.

➡️ Ammunition Availability: Both .450 Bushmaster and .458 Socom ammunition are available, but the availability might vary depending on your location. .450 Bushmaster ammunition might be more widely available due to its popularity for hunting.

➡️ Magazine Capacity: .450 Bushmaster typically has a similar or slightly higher magazine capacity than .458 Socom, which could be advantageous in situations where follow-up shots are needed.

➡️ Ballistic Performance: The ballistic performance of both cartridges is similar, but specific loads can vary. They are effective at relatively short to medium ranges, making them suitable for hunting in dense vegetation or self-defense scenarios.

➡️ Rifle Compatibility: Both cartridges can be adapted to the AR-15 platform with the appropriate barrel and bolt assembly changes. Compatibility might depend on the specific parts available for each cartridge.

➡️ Recoil: Both cartridges generate more recoil than standard AR-15 calibers due to their increased power. However, the felt recoil can be subjective and might vary based on rifle design and shooter preferences.

➡️ Hunting Use: Both cartridges are popular choices for hunting larger game, like deer and hogs, at relatively short to moderate distances. The .450 Bushmaster might have a slight edge in terms of availability and popularity for hunting.

➡️ Cost: The cost of ammunition for both cartridges can vary, but a .450 Bushmaster might be slightly more affordable due to its popularity.

👍 In the end, the “better” choice depends on your specific needs. If you’re looking for a slightly larger bullet diameter and potentially more energy transfer, the .458 Socom might be more appealing. If you want a cartridge with good stopping power and wider availability, the .450 Bushmaster could be a practical choice.

📺 More info in this video:

Can this cartridge penetrate body armor?

💥 It’s important to understand that body armor comes in various levels of protection, each designed to withstand different levels of threats. Here’s an overview:

✒️ Bullet Type and Design: The type of bullet you’re using greatly influences its armor-penetrating capabilities. Hollow point and soft point bullets are designed for terminal ballistics, while armor-piercing or solid projectiles are designed to penetrate armor. A solid or hard-point bullet might have better penetration against armor.

✒️ Armor Material and Level: Body armor is typically rated according to NIJ (National Institute of Justice) standards. Armor comes in various levels such as Level II, Level IIIA, Level III, and Level IV, each capable of stopping specific threats. Higher-level armor is designed to withstand more powerful ammunition, including rifle rounds.

✒️ Velocity and Energy: The .458 Socom is known for its stopping power, but its effectiveness against armor largely depends on the specific load’s velocity and energy. Higher velocities and energy levels might provide better penetration against certain types of armor.

✒️ Armor Defeat: While this is a powerful cartridge, it’s important to note that modern armor, especially higher-level armor like Level IV, is designed to withstand powerful rifle rounds. Armor-piercing projectiles, specifically designed for defeating armor, might be more effective in penetrating armored materials.

✒️ Legal Considerations: The use of armor-piercing ammunition may be subject to legal restrictions in some areas. Always ensure you are complying with local laws and regulations when considering ammunition designed for armor penetration.

📺 More info in this video:

What is the best grain for 458 Socom?

💡 The choice of bullet grain depends on your intended use and the performance characteristics you’re seeking from your ammunition. Different bullet weights can offer various advantages, such as terminal ballistics, accuracy, and range. Here’s a general overview of bullet grain options:

💣 300-350 Grains: Bullets in this weight range are often used for hunting medium to large game, like deer and hogs. They offer a good balance between stopping power and manageable recoil. They are suitable for short to medium distances.

💣 400-500 Grains: Heavier bullets in this range provide even more stopping power and energy transfer, making them effective for larger games or situations where maximum terminal performance is desired. However, they might come with increased recoil.

💣 Above 500 Grains: Bullets in this weight category are quite heavy and are usually reserved for specialized purposes, such as hunting large and dangerous games or specific tactical applications. They can offer impressive penetration and energy transfer, but they might have limited effective range due to their weight.

➡️ When choosing a bullet grain, consider the following factors:

Intended Use: Are you using the .458 Socom for hunting, self-defense, or other purposes? Different bullet weights can excel in different scenarios.

Recoil Tolerance: Heavier bullets tend to generate more recoil. Consider your comfort level with managing recoil when selecting a bullet grain.

Effective Range: Heavier bullets might have a slightly reduced effective range due to factors like bullet drop and velocity. Consider the typical engagement distances for your intended use.

Terminal Performance: Heavier bullets tend to create larger wound channels and deliver more energy upon impact. This can be desirable for hunting or stopping threats quickly.

Ammunition Availability: Check the availability of this ammunition in your chosen bullet grain. Some weights might be more common or readily available than others.

😉 Ultimately, there is no universally “best” bullet grain. It depends on your individual needs and priorities. To make an informed decision, you might want to try a variety of bullet weights to see which one aligns best with your shooting preferences and intended use.

What is the effective range of this ammo?

📝 The effective range of .458 Socom ammunition depends on various factors, including the specific load, bullet type, barrel length, and shooter’s skill.

✍️ As a general guideline, it is optimized for short to medium-range engagements, typically ranging from about 100 to 300 yards.

🛑 Here’s a breakdown of the effective range:

🎯 Short Range (0-100 yards): Within short distances, it is highly effective. Its larger bullet diameter and weight contribute to excellent stopping power and terminal ballistics, making it suitable for hunting in dense vegetation and for close-quarters self-defense scenarios.

🎯 Medium Range (100-300 yards): This cartridge can still deliver significant energy and stopping power at medium distances. However, beyond 200-300 yards, the bullet begins to experience a noticeable drop and reduced velocity, which can affect accuracy and effectiveness.

🎯 Beyond 300 yards: While the .458 Socom can be accurate at longer ranges, its trajectory becomes increasingly curved, and the bullet’s energy diminishes significantly. This makes hitting targets consistently more challenging, and the bullet might not deliver the same stopping power as it does at shorter distances.

📌 Keep in mind that the effective range also depends on the specific load you’re using. Different bullet types and weights can have varying ballistic profiles, affecting trajectory and terminal performance. It’s essential to know your rifle’s ballistics and practice at different distances to become familiar with how the cartridge performs in various scenarios.

Is 458 Socom a sniper round?

🤔 This cartridge is not typically used as a sniper round in the traditional sense. While it offers substantial stopping power and effective terminal ballistics, it’s primarily designed for short to medium-range engagements rather than the precision shooting associated with sniper rifles.

💥 Sniper rounds are often characterized by their long-range accuracy, consistent ballistics, and the ability to maintain accuracy over extended distances. The .458 Socom, on the other hand, is optimized for close-quarters combat, hunting, and self-defense at relatively short to medium ranges. Its larger bullet diameter and weight contribute to its stopping power, but it’s not designed to provide the same level of precision and ballistic performance as rounds specifically engineered for long-range sniping.

🔍 If you’re searching for a cartridge suitable for sniper or precision shooting roles, there are other calibers, such as the .308 Winchester (7.62x51mm NATO) or the various 6mm and 6.5mm cartridges, that are more commonly used for those purposes due to their inherent accuracy and ballistic characteristics.


The 458 Socom is an excellent choice for those who need a high-caliber round but don’t want to sacrifice their AR gun’s accuracy. It’s purpose-driven, which means it’s designed for maximum performance with minimal modification to your AR setup. In this article, we have provided reviews of some of the best ammo on the market. We hope that you found this information helpful and that it will help you make the right decision when purchasing ammunition. Good shopping!🛒😀

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Fredrick Wright
Fredrick Wright
7 months ago

I’m still learning the ropes when it comes to the .458 game, so I thought it’d be a good idea to check out some popular factory rounds. Can you give me some advice?

    7 months ago

    I’ve noticed that the Grizzly – 458 Socom – 350 Grain – 20 Rounds is quite a popular choice. It seems to have gained a good reputation within the community. Having different rounds to try out feels like a great opportunity to experiment and see what works best for you.

      Everett White
      Everett White
      7 months ago

      I’m curious about which brand offers the best value for the price and where I can find these rounds at a reasonable cost.

        7 months ago
        Reply to  Everett White

        I’m particularly advising you to buy and use the Grizzly – 458 Socom – 300 Grain – 20 Rounds. Also, I’ve heard that reloading for the .458 Socom can be quite rewarding. Sharing the experience with friends who reload could be a fun and educational way to get involved in the world of ammunition preparation.

          Houston Lopez
          Houston Lopez
          7 months ago

          I’m in the process of putting together a bolt-action .458 Socom rifle that adheres to Indiana’s hunting regulations. For this build, I’m leaning towards using 250-300 grain bullets, and I’m curious if this bullet weight range is the most suitable choice for my setup. I appreciate any insights or advice you can offer.

            7 months ago
            Reply to  Houston Lopez

            For heavier bullets like the 300-grain ones, achieving around 2000 fps is quite achievable. I can consult my dad for more detailed loading data if you’re interested; he has comprehensive chronic data and loads that come with the territory. This year, he used Grizzly – 458 Socom – 300 Grain – 20 Rounds to take down a deer. The effect was remarkable; the doe’s skull appeared as if someone had drilled a hole about 1/2″ off-center between her eyes. The impact was so significant that she crumpled up and was already sitting in a pool of blood before my dad had recovered from the recoil.

              Xavion Torres
              Xavion Torres
              7 months ago
              Reply to  Houston Lopez

              When looking for different twist rates, your choice largely depends on the heaviest bullet you plan to use. Opting for a 1 in 18″ twist serves as a middle-ground compromise. It’s likely to perform well with lighter bullets but might not be ideal for heavier options. If you’re keen on experimenting with weightier bullets, a faster twist rate is advisable. So, when selecting a twist rate for your barrel, it’s important to consider the heaviest bullet you intend to shoot and how it aligns with the various twist rates available. This thoughtful decision-making process will ensure optimal performance with the range of bullets you plan to use.

                7 months ago

                I’ve been contemplating whether to take my 458 Socom into the woods this fall for deer hunting, especially aiming for the larger ones. However, I’m facing a bit of a dilemma when it comes to choosing the right bullet. The hunting environment I’ll be in involves thick woods where shots exceeding 50 yards are rare. The challenge lies in finding the right balance between bullet expansion and penetration, given the lower velocities associated with this caliber. I find myself caught between the decision of opting for a bullet that either guarantees complete pass-through with minimal expansion, potentially offering the benefit of bone penetration, or going for a bullet that expands rapidly, ensuring quick stopping power but also the risk of causing significant meat damage.

                  Xander Stewart
                  Xander Stewart
                  7 months ago
                  Reply to  Ragebreast

                  I’ve come across quite a bit of feedback regarding the Grizzly – 458 Socom – 350 Grain – 20 Rounds, and they seem to have earned respect among many hunters. I conducted some expansion and penetration testing using this bullet while on an elk hunt. My findings lead me to believe that it would perform well for taking down deer or elk.

                    7 months ago
                    Reply to  Ragebreast

                    With over five decades of deer hunting experience under my belt, I’ve had the chance to shoot a variety of guns and use different bullet types. Rest assured, any choice you make for your gun will be more than capable of achieving lethal results. A friend of mine has a firearm that closely resembles yours, and he’s using Grizzly – 458 Socom – 300 Grain – 20 Rounds with great success. My recommendation would be to focus on finding a reliable load that functions well in your rifle while keeping recoil at a level you’re comfortable with. This way, you can truly enjoy shooting your firearm, and when you place your shot in a way that allows the bullet to reach the vital areas, the deer won’t stand a chance. Best of luck, and happy hunting!