What is 7.62×39 Steel Cased Ammo? Unveiling the Basics
The Fundamentals
At its core, 7.62×39 steel cased ammo refers to cartridges where the casing of the bullet is constructed from steel, as opposed to the more commonly used brass. This seemingly simple difference has wide-ranging implications, influencing everything from manufacturing costs to the longevity of your firearm.
The 7.62×39 cartridge itself is a Russian design, initially developed for the SKS semi-automatic rifle and later, the iconic AK-47 assault rifle. These firearms were designed for durability and ease of production, and steel-cased ammunition neatly aligned with these goals. The Soviet Union had immense need for affordable mass production, and steel, being more plentiful and less expensive than brass, became the logical choice. This also made the ammo accessible for the vast quantities needed to supply the Red Army.
Steel-cased ammunition provides a functional alternative to brass. While the projectile and propellant are similar, the change in material significantly impacts how the ammunition is made and, ultimately, how it performs. Understanding the construction of steel cases is fundamental to understanding its advantages and disadvantages.
Benefits of 7.62×39 Steel Cased Ammo: Unveiling Advantages
Cost Efficiency and Availability
The appeal of 7.62×39 steel cased ammo comes with several notable benefits, particularly for the budget-conscious shooter.
Cost savings are a significant draw. Steel is fundamentally cheaper than brass. This lower cost translates directly into lower prices per round for the consumer. This difference becomes increasingly significant for those who frequently practice or compete, making steel-cased ammo a more affordable option for high-volume shooting.
Availability is another factor. In some markets, steel-cased 7.62×39 ammunition is more readily available than brass-cased options. This is particularly true during times of high demand or when supply chain disruptions occur. The easier availability of steel cased ammo can be a significant plus for those who depend on a steady supply for training or defense.
Accuracy Expectations
While the myth of poor accuracy has often plagued steel-cased ammunition, it is worth noting that accuracy can be good, and it can rival the brass. The accuracy of the ammunition will depend upon the manufacturing processes of the individual manufacturer. However, in most cases, steel-cased ammo can be perfectly viable for many shooters. The design and quality of the bullet, along with the consistency of the powder charge, play a crucial role in accuracy, irrespective of the case material. Many shooters will find that steel-cased ammo is plenty accurate for plinking, target practice, and even hunting.
The advantages are clear: a more affordable and readily available ammunition option.
Drawbacks of 7.62×39 Steel Cased Ammo: Understanding Potential Challenges
Wear and Tear
While steel-cased ammo offers several benefits, it’s important to be aware of potential downsides.
Firearm wear is a frequent concern. Steel, being a harder material than brass, can potentially cause increased wear on certain components of your firearm, such as the chamber and extractor. This is because the steel cases may not expand and contract as smoothly as brass, potentially leading to increased friction and abrasion. Whether this accelerated wear truly becomes a significant problem depends on a number of factors, including the quality of the steel, the specific firearm, and the volume of shooting. The myth of accelerated wear and tear has been repeatedly addressed in tests and simulations. However, there can be small differences.
Extraction Issues and Corrosion
Extraction issues are another possibility. Steel cases don’t have the same level of flexibility as brass. If the chamber is dirty or if the ammunition generates high heat (such as when firing rapidly), the steel case may not extract as easily. This can lead to malfunctions, such as the case getting stuck in the chamber. Some manufacturers mitigate this issue with coatings, but it remains a potential concern.
Corrosion is a consideration, particularly if the ammunition is not stored properly. Steel is susceptible to rust, which can compromise the structural integrity of the case and potentially lead to malfunctions. Proper storage in a dry, climate-controlled environment is essential to prevent corrosion.
It is important to remember that the degree of wear and other potential issues depends on a variety of factors, including the design of the firearm, the quality of the ammunition, and the shooting conditions.
Coatings: The Protective Armor of Steel Cases
Lacquer, Polymer, and Zinc
To combat the potential drawbacks associated with steel cases, manufacturers often employ various coatings. These coatings serve to reduce friction, improve extraction, and offer protection against corrosion.
Lacquer coatings are frequently used. Lacquer forms a protective barrier on the steel case, which helps to reduce friction and improve extraction. These coatings are relatively inexpensive and easy to apply. However, over time, or under high heat conditions, lacquer can potentially melt or gum up the action of the firearm.
Polymer coatings represent a modern alternative. Polymer coatings, often a type of epoxy, provide a more durable and potentially more effective barrier. They generally offer better protection against both friction and corrosion than lacquer. The downside to polymer coatings may be higher production costs.
Zinc plating offers an alternative protective mechanism. It is a process where a thin layer of zinc is applied to the steel case. This helps to prevent rust and corrosion. It can also reduce friction. Zinc plating can be a more durable alternative to some other coatings, and the zinc also acts as a lubricant, to keep the metal from sticking to the barrel.
The best type of coating is dependent on the firearm, environment, and the shooter’s personal preferences.
Where to Purchase 7.62×39 Steel Cased Ammo: Finding the Right Source
Finding a Dealer
Finding the right source for your 7.62×39 steel cased ammo is crucial for both convenience and safety.
Several reputable online retailers specialize in ammunition sales, offering a wide selection of brands and quantities. Before making a purchase, compare prices from multiple vendors and also research the brand reputation. Read reviews and look for any red flags. Make sure the website is secure before providing any payment information.
Local gun stores and sporting goods retailers are another great option. This allows you to visually inspect the ammunition before purchasing. It also provides the opportunity to ask questions and get personalized advice from knowledgeable staff members. It is a good idea to support local businesses.
Important Considerations
Factors to consider when purchasing include the brand and the specific bullet type. Some brands are known for better quality control than others. The bullet weight and design (FMJ, hollow point, etc.) will impact its performance. Quantity is also important, as buying in bulk can often save money.
When purchasing ammo, safety is paramount. Always inspect the ammunition for any visible defects (dents, cracks, corrosion, etc.). Ensure the ammunition is the correct caliber for your firearm.
Cleaning and Maintenance: Preserving Your Firearm
Routine Care
Cleaning and maintenance are essential practices, particularly when using 7.62×39 steel cased ammo.
Cleaning the firearm after use removes carbon buildup, which can be greater than with brass cases, especially in the chamber and bore. Regular cleaning keeps the weapon functioning properly. The bore and chamber are most important and should be cleaned with a brush, solvent, and patches.
Use a bore solvent formulated for use on steel-cased ammunition. A good solvent will help to remove the build-up of carbon and the residue from any coating that may remain on the case. Follow the manufacturer’s instructions for cleaning your firearm.
Lubrication and Inspection
Maintaining the firearm is vital. The moving parts of the firearm should be lubricated with a quality gun oil. This will help prevent friction and reduce wear. Regular inspection can reveal signs of wear, malfunctions, or the need for repair.
Myths and Misconceptions Debunked
Truths about the Ammo
Several myths surround the use of 7.62×39 steel cased ammo.
One common myth is that it will destroy your barrel. This is largely untrue. While the harder steel can potentially cause more wear, the effect on most modern barrels is typically minimal, especially if the firearm is properly maintained.
Another misconception is that steel-cased ammo is inherently inaccurate. While the quality of the ammunition can impact accuracy, the case material itself does not guarantee poor performance. High-quality steel-cased ammunition can be accurate and suitable for a variety of shooting activities.
Conclusion: Making an Informed Choice
7.62×39 steel cased ammo offers a compelling alternative to brass. While it may present specific challenges compared to brass-cased ammunition, it can offer a reliable and economical solution for many shooters. You must be aware of the potential drawbacks.
If cost and availability are major concerns and you are committed to proper maintenance and cleaning, then 7.62×39 steel cased ammo could be a good option. Before committing to a large purchase, it is a good idea to experiment with different brands and types.
The right decision on the use of 7.62×39 steel cased ammo is a personal one. Careful consideration of the benefits, potential downsides, and your personal shooting habits will lead you to the best choice.
