What Round Does the FN FAL Shoot? A Guide to the 7.62 NATO

Table of Contents

1. Introduction
2. The Right Arm of the Free World: A History of Chambering
3. Technical Specs of the 7.62x51mm NATO
4. 7.62 NATO vs. .308 Winchester in the FAL
5. The FAL’s Adjustable Gas System: Tuning for the Round
6. Logistics: Carrying and Feeding the Beast
7. Tactical Applications: Why the 7.62 FAL?
8. Conclusion
9. FAQ

Introduction

Choosing a primary rifle platform often comes down to the caliber it chambers and how that round performs when the stakes are high. For decades, the FN FAL stood as the benchmark for battle rifles across the globe, earning its reputation in the hands of professionals in over 90 countries. When you are evaluating a legacy system like the FAL for your own armory, the first question is usually about its firepower: what round does the FN FAL shoot? At Crate Club, we prioritize gear and weapon systems that have been vetted in the harshest environments, and you can choose your Crate Club tier when you're ready to build your own kit. This article breaks down the specific round the FN FAL uses, its ballistic performance, and why this combination remains a favorite for serious tacticians. We will cover the history, the technical specifications, and the practical considerations of feeding this iconic rifle.

Quick Answer: The FN FAL is chambered for the 7.62x51mm NATO cartridge. While it can often fire the civilian .308 Winchester round, operators should understand the pressure and headspace differences between the two before hitting the range.

The Right Arm of the Free World: A History of Chambering

The FN FAL, or Fusil Automatique Léger (Light Automatic Rifle), was designed by Dieudonné Saive and Ernest Vervier at Fabrique Nationale Herstal. Its development coincided with a pivotal moment in small arms history. In the aftermath of World War II, Western nations were searching for a standardized cartridge that offered a balance between the massive power of the .30-06 Springfield and the lighter, more controllable rounds being experimented with in Europe.

Initially, the FAL was designed to shoot the .280 British round. The .280 was an intermediate cartridge that many experts believed was the perfect balance for a modern infantry rifle. It offered manageable recoil and sufficient lethality. However, the United States pushed for a more powerful, full-sized rifle cartridge to be the NATO standard. This led to the adoption of the 7.62x51mm NATO. For a deeper look at the name and origin, see What Does FN FAL Stand For?.

FN Herstal redesigned the FAL to accommodate this larger, more powerful round. The result was a rifle that could reach out and touch targets at significant distances but was arguably over-powered for controllable full-auto fire. This decision solidified the FAL as a "Battle Rifle"—a term used to describe a service rifle that fires a full-powered rifle cartridge rather than an intermediate one like the 5.56mm. For a breakdown of the rifle's broader legacy, read Who Made the FN FAL.

Technical Specs of the 7.62x51mm NATO

To understand the FN FAL, you have to understand the 7.62x51mm NATO. This round is the backbone of the platform's performance. It was designed to provide long-range accuracy and high terminal energy, making it effective against both personnel and light cover. For the cartridge details, see What Caliber is a .308 Rifle?.

7.62x51mm NATO (Seven-six-two by fifty-one) is a rimless, bottlenecked rifle cartridge. It is often compared to the .308 Winchester, but there are distinct differences in how these rounds are loaded and how they interact with a rifle's chamber.

Ballistic Profile

The standard military load for this round is the M80 Ball. This typically features a 147-grain or 150-grain bullet. When fired from the FAL’s standard 21-inch barrel, you can expect a muzzle velocity of approximately 2,750 to 2,800 feet per second. For a deeper dive into performance, check out How Powerful is a .308 Rifle?.

Effective Range

The FAL is not a sniper rifle, but it is highly capable at distance. Its effective range is generally considered to be around 600 meters for point targets. In the hands of a skilled operator, and with quality glass, it can push out to 800 meters for area suppression. If you want a closer look at distance, read How Far Does a .308 Rifle Shoot?.

Energy and Penetration

The 7.62 NATO carries a lot of "thump." It delivers roughly 2,500 foot-pounds of energy at the muzzle. For a prepper or a tactician, this means better performance through brush, auto glass, and standard building materials. While a 5.56mm round might deflect or fragment upon hitting a heavy barrier, the 7.62 NATO is more likely to punch through and maintain its trajectory. That capability is a big part of what a .308 rifle is good for.

Field Note: If you are running an FN FAL in a defensive role, remember that 7.62 NATO rounds have a high risk of over-penetration in residential settings. Always be aware of your backstop and what lies beyond your target.

7.62 NATO vs. .308 Winchester in the FAL

A common point of confusion for new FAL owners is whether they can safely use .308 Winchester ammunition. While the external dimensions of the two cartridges are nearly identical, they are not the same. For a detailed compatibility breakdown, see Can You Shoot 7.62x51 in a .308 Rifle?.

Pressure Differences: The .308 Winchester is often loaded to higher commercial pressures than the 7.62 NATO. Military 7.62 NATO brass is typically thicker to handle the rough extraction of machine guns and semi-auto rifles, which results in slightly less internal volume and lower pressure.

Headspace: The headspace (the distance from the face of the bolt to the point in the chamber that stops the forward movement of the cartridge) is generally longer in 7.62 NATO chambers. This allows for more reliable feeding and extraction even when the rifle is dirty or the ammo is slightly out of spec.

The FAL Verdict: Most metric and inch-pattern FALs can handle .308 Winchester. However, because the FAL uses a tilting bolt locking system and an adjustable gas regulator, it is sensitive to pressure. If you run hot .308 commercial loads, you must adjust your gas system to prevent the bolt from slamming back too hard, which can cause premature wear or damage to the receiver.

Key Takeaway: While 7.62x51mm NATO is the native round for the FN FAL, .308 Winchester can be used if the rifle’s gas system is properly tuned to account for the pressure difference.

The FAL’s Adjustable Gas System: Tuning for the Round

One of the most unique features of the FN FAL is its Short-Stroke Gas Piston system combined with an adjustable gas regulator. Because the 7.62 NATO round varies in pressure depending on the manufacturer and the country of origin, the FAL allows the user to "tune" the rifle to the specific ammunition being used. For a full mechanical breakdown, read Understanding How FN FAL Works.

The gas regulator is located just behind the front sight. It works by venting excess gas out of the system. If your rifle is "over-gassed," the bolt carrier will cycle with too much force, increasing recoil and wear. If it is "under-gassed," the rifle will fail to extract or feed the next round (short-stroke).

How to Tune the FAL to Your Ammo:

1. Open the vent: Turn the regulator so the gas port is fully open (venting most of the gas).
2. Fire a single round: Load one round in the magazine. The bolt will likely fail to lock back because there isn't enough gas to cycle the action fully.
3. Close the vent: Turn the regulator one click at a time to close the port, allowing more gas to push the piston.
4. Repeat: Continue until the bolt consistently locks back on an empty magazine.
5. Add a "buffer" click: Once it locks back, give it one or two more clicks of gas to ensure reliability when the gun gets dirty or you are in cold weather.

This system makes the FAL one of the most versatile 7.62 rifles ever made. Whether you are shooting surplus military ball or high-quality match-grade .308, you can adjust the rifle to cycle reliably without beating itself to death.

Logistics: Carrying and Feeding the Beast

While the 7.62x51mm round offers superior power, it comes with a trade-off in weight and capacity. For those used to the AR-15 platform, the logistics of the FAL can be a wake-up call.

Ammunition Weight: A standard 5.56mm round weighs about 12 grams. A 7.62 NATO round weighs about 24 grams—exactly double. When you are humping a pack and a chest rig, this weight adds up fast. A standard combat load of seven 30-round 5.56 magazines is roughly 210 rounds. For the same weight, an FAL operator might only carry 100 to 120 rounds.

Magazine Capacity: Most FAL magazines are 20-round boxes. There are 30-round magazines available (often designed for the L4 Bren or certain South African variants), but they are heavy and can be cumbersome when shooting from the prone position. Most operators stick to the 20-rounders for a lower profile and better reliability.

Magazine Types: You must know if your FAL is a Metric or Inch pattern. Metric magazines are the most common and were used by most of the world. Inch pattern magazines (used by the UK, Australia, and Canada for the L1A1) have a larger "lug" on the front. While an Inch rifle can often use Metric magazines, a Metric rifle generally cannot use Inch magazines without modification.

We often see these logistical challenges addressed in our higher-tier offerings. For example, the Major tier frequently includes high-durability pouches, medical kits, and cleaning tools specifically designed for those running heavier platforms like the FAL or other 7.62 systems.

Tactical Applications: Why the 7.62 FAL?

In a modern context, why would someone choose a rifle that shoots 7.62 NATO over the lighter 5.56? It comes down to the mission profile. The FAL is a "Reach Out" rifle. If you are building out the rest of your kit, browse the Gear Shop for supporting equipment.

The Designated Marksman Role

While the FAL isn't a sub-MOA (Minute of Angle, a measure of accuracy representing about 1 inch at 100 yards) precision rifle, it is more than capable of serving as a Designated Marksman Rifle (DMR). If your AO (Area of Operations) includes wide-open plains, mountainous terrain, or long rural roads, the 7.62 round gives you a significant advantage in standoff distance. For more on the broader role of rugged kit, see what tactical gear is used for.

Barrier Neutralization

If you are in a SHTF (S**t Hits The Fan, a term for societal collapse or emergency) scenario, you might have to deal with threats behind cover. 5.56mm is notorious for losing its effectiveness when it hits a car door or a brick wall. The 7.62x51mm NATO round is designed to retain enough mass and energy to neutralize threats on the other side of light cover. If you want a broader look at the platform's status today, read Is the FN FAL Still in Production?.

Stopping Power

There is no replacement for displacement. The 7.62 round creates a significantly larger permanent wound cavity than smaller intermediate rounds. In a defensive engagement, stopping the threat as quickly as possible is the goal. One well-placed 147-grain 7.62 round is often more effective at achieving an immediate "stop" than multiple hits from a smaller caliber.

Bottom line: The FN FAL shoots the 7.62x51mm NATO, a round that prioritizes range, energy, and barrier penetration over the high capacity and low weight of modern intermediate cartridges.

Conclusion

The FN FAL remains a powerhouse in the world of tactical rifles because the 7.62x51mm NATO round it shoots is a proven performer. Whether you call it the "Right Arm of the Free World" or just a reliable battle rifle, the FAL offers a level of ballistic authority that few other platforms can match. Understanding the nuances of this round—from the gas system adjustments to the pressure differences between NATO and .308 Winchester—is what separates a casual shooter from a proficient operator.

At Crate Club, we believe in being prepared for any distance and any threat. Our mission is to provide you with the gear vetted by Special Ops veterans, ensuring your kit is ready when you are. Whether you are just starting your journey with the Lieutenant tier or you are looking for the professional-grade gear found in our General tier, we help you build a loadout that matches the power of platforms like the FN FAL.

When you are ready to round out your setup, the Gear Shop is a natural next stop for supporting gear and everyday carry essentials.

Explore our subscription tiers today to see how we can help you stay ahead of the curve.

FAQ

Can I shoot .308 Winchester in an FN FAL?

In most cases, yes, you can shoot .308 Winchester in an FN FAL, but you must be careful. .308 Winchester is often loaded to higher pressures than 7.62x51mm NATO, and the brass is thinner. You should adjust your gas regulator to ensure the rifle isn't being over-stressed and check for signs of excessive pressure on the spent casings. For a deeper compatibility breakdown, revisit Can You Shoot 7.62x51 in a .308 Rifle?.

What is the standard magazine capacity for an FN FAL?

The standard magazine capacity for the FN FAL is 20 rounds. While 30-round magazines exist, they are less common and can make the rifle significantly heavier and harder to maneuver. Most operators prefer the 20-round box magazine for its reliability and its ability to be used more easily from a prone or supported shooting position. If you want a broader look at capacity, see How Many Rounds Does a .308 Rifle Hold?.

How far can the FN FAL accurately shoot?

The FN FAL has an effective range of approximately 600 to 800 meters. For a point target (a single person), most shooters find the limit to be around 600 meters using standard iron sights. With the addition of a modern optic, the 7.62x51mm round allows the rifle to remain effective at even greater distances, depending on the shooter's skill. If you want a deeper dive into distance, revisit How Far Does a .308 Rifle Shoot?.

Is the FN FAL still used by militaries today?

While most major powers have moved to 5.56mm or other intermediate calibers for their primary infantry, the FN FAL is still in active service with several nations, particularly in South America and Africa. It is also a very popular choice for secondary or reserve forces and remains a favorite for civilian tacticians who value the 7.62 NATO cartridge. For the latest look at the platform’s status, read Is the FN FAL Still in Production?.