Debunking myths about .300 Blackout and 7.62×39 for hunting

.223 rounds blackout

The aptitude of the 7.62×39 and .300 Blackout cartridges is observed, delivering particular benefits over the .223 Remington cartridge. The skill sets of the two cartridges substantially align with each other. Despite that, one should be aware of the principal discrepancies between them. Furthermore, there are numerous fantasies and miscalculations about the exactness and suitability for hunting. Understanding the disparity between the.300 Blackout and 7.62x39mm can be difficult because different people have different reasons for preferring one over the other.

.300 Blackout vs 7.62×39: History

The opening of World War II saw the standard infantry rifles of all major combatants firing full-power cartridges, such as the .30-06 Springfield, .303 British, 7.92x57mm Mauser, and 7.62x54mmR. The cartridges fired by these rifles were powerful and accurate enough to hit targets over 600 meters away. However, the rifles also had a lot of recoil and were challenging to handle when firing fully automatically.

The armies used several types of sub-machine guns that fired pistol cartridges, such as the 7.62x25mm Tokarev, 9mm Luger, and .45 ACP. With sub-machine guns, fully automatic fire is much more controllable. Still, they have different stopping power or effective range than rifles.

Since most fights happened between 100 and 300 yards, gun manufacturers created cartridges that were more powerful than a pistol but had less recoil than a rifle. The.30 Carbine cartridge was one of the first that the military used because it met requirements. This cartridge was used by the US Military in M1, M2, and M3 Carbines during World War II and in Korea.

A few years later, the Germans created the StG 44 rifle with the 7.92x33mm cartridge for use in World War II. They had a significant impact on the trajectory of firearms design. The StG 44 and 7.92x33mm Kurtz were so impressive to the Soviets that they decided to develop a similar rifle and cartridge.

The 7.62x39mm (M43) cartridge followed in the ensuing years. A.311″ 123-grain boat tail full metal jacket (FMJ) bullet was fired by the initial 7.62x39mm Soviet Army ammunition load at a muzzle velocity of 2,300 feet per second (1,445 foot-pounds of energy).

Because it has a rimless and highly tapered case, the 7.62x39mm rapidly caught on with the Soviet Army. They soon began using the SKS semi-automatic rifle, the RPD machine gun, and the ordinary AK-47 assault rifle, which all used 7.62×39 ammunition.

The United States Military went through a similar approach as the Soviets in looking for a replacement for the.30-06 Springfield. The army eventually decided to replace the .30-06 and M-1 Garand with the M-14 rifle and the 7.62x51mm NATO cartridge.

However, many leaders were dissatisfied with the M-14 because it needed to be lighter and easier to control when firing fully automatically. According to their standards, the new cartridge didn’t improve upon the issues with the old cartridges. The M-16 rifle and 5.56x45mm cartridge were eventually adopted by the US Air Force, Army, and Marine Corps in the 1960s.

Which is more beneficial for you,.223 or 308?

The M-16 and the 5.56x45mm cartridge had significant problems during the Vietnam War. Still, modifications to the rifle and the cartridge solved many of those issues. Today, both of them continue to serve in military units around the globe. Many soldiers who used the M-16 rifle in combat complained about the rifle’s poor stopping power, mainly when using the M855 ball load.

This led to the developing of bigger cartridges that could be used in modified AR-15 rifles, such as the 6.5 Grendel, 6.5 Remington SPC, .458 SOCOM, and the .50 Beowulf.

Advanced Armament Corporation (AAC) innovated the .300 AAC Blackout. Around the same time, military officials began looking for a new cartridge that could consistently fire. 30 caliber ammunition Using an M-16 or M-4 rifle and a regular bolt and gas system. AAC (Advanced Armament Corporation) was the company to innovate the .300 AAC Blackout. Additionally, they wanted the new cartridge to be sufficiently comparable to the 5.56x45mm in terms of dimensions to allow for the continued use of a normal M16/AR magazine with a 30-round capacity.

The.300 Whisper cartridge proved to be the key to their discovery. The .300 Whisper was designed by JD Jones of SSK Industries in the 1990s. A .221 Remington Fireball case is necked up to shoot .30 caliber projectiles. However, the .300 Whisper was originally a wildcat cartridge. Advanced Armament Corporation (AAC) designers made a few changes to the cartridge to obtain it approved by SAAMI. This made it possible for the cartridge to be mass-produced by significant ammunition manufacturers.

The .300 Blackout is a type of rifle ammunition that is available in several different supersonic loads. For instance, Barnes makes a cartridge that expels a 110gr TAC-TX projectile with 1,349’/pounds of energy at a muzzle velocity of 2,350 feet per second. The company Hornady has a load with a 125-grain hollow point that moves at 2,175 feet per second, with 1,313 foot-pounds of energy.

300 Blackout Vs. 7.62×39 Reloading Data

The most frequently asked question I receive is about the availability of ammunition and when prices will return to “normal.”

The most commonly asked inquiry I receive is concerning the provision of ammunition and when prices will revert to “normalcy.”

A number of ammo companies are laden with difficulties as there is a scarcity of components, such as casings, primers, powder, and bullets.

It is suggested you construct your own ammo instead of relying on firms to give it. You can economize on ammunition by manufacturing it yourself.

The 300 blackout bullet was specially formed for usage in an AR-15 platform, whilst a 7.62×39 bullet has been planned for the best popular AK platforms.

.300 AAC Blackout

The 300 BLK (AAC) was brought about by a joint effort from Remington Defense and Advanced Armament Corporation; it is meant to devise a trusty, minimal-kick shell that can be used in semi-automatic and full-fire arms. At first, I assumed that the 300 BLK was an upgraded adaptation of the 5.56x45mm round, tailored to mid to close-range shooting. Although it falls short compared to the 7.62x39mm one, the 300 BLK is much more precise in aim.

300 AAC Blackout Vs. 5.56×45?

The 300 BLK can be interchanged with any M4 or M16 (AR) structure, having indistinguishable magazines and lower beneficiary from the 5.5645mm NATO. It has matching length and breadth too. To effectively utilize this, you must alter the barrel of your gun. The 5.56×45mm NATO delivers lesser recoil than the 300 BLK due to its shooting of a tinier .30 caliber slug.

The 300 Blackout: Why Was It Created?

The 300 BLK was created as a potential solution to the varying types of missions conducted by the men inside Special Operations Command (SOCOM). The 5.56x45mm bullet is very high-energy and reaches speeds of up to 3,265 ft/s. The 5.56x45mm NATO round was not providing enough stopping power for many soldiers, who instead preferred the stopping power of a .30 Cal bullet.

The 300 BLK was fashioned as a feasible solution for the many sorts of endeavors managed by personnel within Special Operations Command (SOCOM). The 5.56x45mm bullet is highly energetic and reaches velocities of up to 3,265 ft/s. Soldiers found that the 5.56x45mm NATO round lacked the hindering power they favored.30 Cal round.

It is well-known that the AK-47 is the most commonly used conflict weapon in the world, utilizing a 7.62x39mm bullet. The 300 BLK was designed to bring a more noteworthy projectile into play with the M4 platform.

Can I Shoot a.300 AAC Blackout in a 5.56x45mm Chambered Barrel?

I do not urge uniting disparate forms of ammunition when using a 300 Blackout or 5.56 NATO barrel at any time. Launching a 5.56 bullet from a .300 AAC Blackout barrel or vice versa will lead to an overdue calamity. This can cause grievous injury or death. There aren’t too many things worth dying for and this isn’t one of them for certain.

Can I Put a Suppressor on a 300 Blackout?

Without question, yes! Among the objectives for the 300 BLK cartridge was to be able to connect a suppressor. Understanding that SOF troopers must remain hushed and concealed in an urban environment necessitated this requirement. From what I’ve noticed, those with a 300 BLK use it predominantly due to the fact that it is compatible with a suppressor and is as trusty as an AR. We will delve into subsonic rounds further down in a separate blog, but for now, understand that subsonic bullets move at slower than sound speed (1,100 ft/s). Normally they are significantly hefty at 190-220 grams and have an average muzzle velocity of around 1,050 ft/s.

The three major aspects I take into account while selecting a suppressor include weight, length, and sound attenuation. This specific suppressor was built to collaborate with high-pressure subsonic ammo. The ideal set up is certainly the Sig Sauer SLH .300 BLK Suppressor, as Sig suppressors discharge gas generated from combustion more quickly compared to other labels, thus producing lesser noise. What’s more, Sig suppressors do well in hindering flare too. I like how conveniently affixing the Sig Clutch Lok Direct thread pattern through an audible and tactile click is.


The Ak-47, RPK, and SKS rifles have made the 7.62x39mm bullet one of the most widely used cartridges in the world. The 7.62×39 is a bullet designed for close to medium-range combat (501 yards or less). The RPK can shoot rounds much further, but 7.62×63 bullets are more accurate.

The AK-47, RPK, and SKS weapons have made the 7.62x39mm gunshot one of the most widely employed cartridges around the world. The 7.62×39 is a projectile crafted for proximal to middle-range battling (501 yards or less). Although the RPK can deliver bullets much farther away, the 7.62×63 projectiles are more precise.

The majority of 7.62×39 instances have an included Berdan Primer, which is constructed of steel. Unfortunately, this is not seen as preferable material. The Berdan Primer is a shared kind of primer that is popular in Europe, with twin flint holes utilized to light up the gunpowder. It seems that you are unable to reuse Berdan primers without considerable knowledge and proficiency concerning guns and ammunition.

The case of the 7.62×39 is broader yet littler than the .300 Blackouts in general; however, both gunshots show basically indistinguishable velocity and pressure details. In the event that you meddle with your rounds individually, you may be able to get them somewhat closer together regarding coequality.

When loaded with Hodgdon’s CFE BLK powder, the 300 BLK cartridge can secure similar velocities to other cartridges, yet with 15,000 PSI less in power. The 7.62×39 has more force than the 300 BLK, implying a 300 BLK rifle can shoot with comparative outcomes utilizing a longer barrel and bigger frame.

7.62×39 Reloading Data

Due to the scarcity of such cases, there are only a few ways to reload boxer primer cases for a 7.62×39 chamber. To optimize your rifle, a 300 BLK cartridge can be loaded with many different powders and bullet types. If you have a 7.62×39, it’s probably an older gun with sentimental value or fun to shoot. No matter what, reloading your ammo will be cheaper in the long run.

Captain Hunter is a seasoned hunting mentor with over 20 years of experience in the field. His passion began as a young man on trips with his father and grandfather in the Colorado mountains. Today, he shares his unmatched skills in survival, tracking, and marksmanship through his website When he's not volunteering with youth hunting programs, you can find Captain Hunter providing expert hunting tips, gear reviews, and answers to your most pressing questions. His decades of experience make him the trusted guide to help any outdoorsman master the sport.

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