problems with 300 blackout

This means smaller powder charges and faster powders. A 300 Blackout bullet fired from a 10.5-inch barrel has almost the same muzzle energy as a 5.56 bullet fired from a 16-inch barrel. None of the primers in Lehigh Defense brass were crimped, but all of them in the Federal brass were crimped. If your rifle is like mine, there's a fine line on getting it to work. For what it's worth, sizing brass without the expander ball also goes a long way toward keeping case necks straight, which generally results in solid accuracy. Sorry, an error occurred and we could not sign you up. That means if you aim at someones chest at that range, the bullet is most likely going to slump into the ground at their toes. Let's consider the Blackout with 150-grain bullets at 2,100 fps. After a number or trips to the range and a lot of brass and bullets, I found a load that would work- note the bughole in the middle left side of the target below. The 300 Blackout cartridge was designed from the ground up to be fired through AR-15s, and as a result it doesn't suffer from any of the reliability problems of other cartridges. If you shoot one of these cartridges in a rifle with a 7-inch barrel, though, then youre only going to get about 900 fps in velocity. All Rights Reserved, Botswana Safari with No Second Place Winner Bill Jordan (Part 2). By the time both bullets have traveled about 500 yards, theyre moving at almost the same speed. The bullet also weighs in at a hefty 188-grains, which gives it enough mass to keep pushing deep into the target after expanding. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. Although theyre quieter, subs are also have significantly worse external and terminal ballistics and often dont have enough energy to make the gun operate properly. I recommend first to try slower powder, I had the exact same problems with mine. by 20X11 Sun Dec 29, 2013 11:19 am, Post That person was Bill Wilson of Wilson Combat with his 7.62x40WT. Using a Magpul magazine again as our example, they deploy a distinct rib design and smoother upper-half texture this provides the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues.. The 300 Blackout has become one of the most popular rifle cartridges available. These Its not uncommon for you to get a failure to eject or a failure to feed when using subsonic 5.56 ammo, which refers to any malfunction where the casing is pulled out of the chamber but not removed from the gun or when the next casing fails to enter the chamber. For example, you cant increase the weight of a 5.56 bullet to more than about 70-grains before it starts causing problems. While the barrel and bolt of an AR-15 are tailormade to only shoot 5.56/.223 ammo, the rest of the gun is more or less cartridge agnostic. The only downside of these cartridges is the cost$1.8 per roundwhich makes it expensive to practice with this ammo. Frankenstein AR-15 troubleshooting question, .300 Blackout/Whisper Ballistics Gel Results, retrieve your Would you mind doing me a favor? However, we show the problem and some testing. I also learned in my research that virtually all 300 AAC Blackout pistol builds utilize: a pistol length gas system, a lighter, carbine weight bolt carrier group (BCG), and a lighter, carbine weighted buffer in order to cycle sub-sonic reliably. The reason why a dedicated .300 BLK magazine is so crucial is because of the wide grain weight range .300 BLK works in. Other factory ammo and reloads with CCI 400's were 100%. This is why the 300 Blackout is also called the 7.6235, which corresponds to its bullet width and case length in mm, respectively. They offer an almost identical practice cartridge that uses the same amount of gunpowder, but with a full metal jacketed bullet instead of their Machined Selous Expander bullet, which drops the price to a more affordable 98 cents per round. Hornady 300 Blackout 125-grain Full Metal Jacket Frontier, Hornady 300 Blackout 125-grain Hollow Point American Gunner, Hornady 300 Blackout 208-grain A-MAX Hornady BLACK, Hornady Full Metal Jacket Frontier 300 Blackout ammo, Hollow Point American Gunner 300 Blackout ammo, Discreet Ballistics 188-grain Subsonic Selous Machined Expander 300 Blackout, Hornady 110-grain GMX Full Boar 300 Blackout, Discreet Ballistics 188-grain Subsonic Selous Machined Expander. Youll also see bullet widths measured in millimeters (mm), and the width of the 300 Blackout bullet works out to 7.62 mm. In the AAC MPW carbine, the 10-shot, 100-yard group measured 1.81 inches. Potentially both. It isn't the "cheap" "crappy" factory. and opinions expressed on this website are those of the authors and do not necessarily reflect the So, how do you maximize bullet energy without exceeding the speed of sound? No one doubts the deer-killing performance of the 30-30, and the 300 Blackout can match or exceed that. They came up with a solution for that problem, too. It would work well for defense and tactical applications; the bullet's bonded construction would help it hold together when encountering a barrier. Copyright 2023 | Privacy and Disclosure | Curation Policy | DMCA Policy. The same properties that make 5.56 bullets fragment inside people also make it break apart when it hits wood or metal. This is certainly the prominent selling point of the cartridge, but one of the areas the 300 BLK will sometimes lack is accuracy. I immediately assumed the same bullet set-out problem was to blame, so I also tested it in the CVA Scout. Quoted: A properly gassed .300blk pistol should run most sub/super loads with and without a suppressor using a non adjustable gas block. For bulk practice ammo I wet tumble all my 223 (5.56) / 300 blackout after resizing on the 650/RT1500. Well, someone did. The bullet drops about 2 inches at 100 yards, 4 inches at 200 yards, 1 foot at 300 yards, 2.5 feet at 400 yards, and 5 feet at 500 yards. Jason Imhoff then drafted the specifications for the cartridge that would eventually be approved by SAAMI. You grab some friends, line up behind the car, put your hands on the bumper, and push as hard as you can. While different brands, weights, and loads of ammo will have slightly more or less muzzle energy than this chart shows, it gives you a good ballpark estimate for most off-the-shelf 5.56 and 300 Blackout ammo. Now lets look at how different barrel lengths affect the muzzle energy of these two bullets. With the 210-grain Berger VLD Target handload, four of the 10 rounds were above the speed of sound even after reducing the powder charge. . 10.5g it functions but doesn't keep the bolt open. It's usually the shorties - under 10" - that need the can to cycle with subs. Second, theres the fact that this bullet causes a lot more damage than a hollow point 5.56. As deer ammo goes, thats slow, but only 200 fps slower than the old 30-30. Thought a Beretta shotgun was out of your budget? It cycles fine with supersonic ammo. As the name implies, overpenetration refers to when a bullet passes through or misses your intended target and then continues on to hit something you didnt intend to shoot. In the case of 300 Blackout, you either . without spending more than you need to. If it is mixed brass of 223/5.56 brass that was converted to 300 Blackout I have read in a couple of Forums that NATO 5.56 wall thickness creates issue when trimming or cutting it to make 300 blackout brass. When I built mine, I settled on a 22 barrel, [], The 300 AAC Blackout (300 BLK) is a popular alternativecartridgein the AR-15/M16 M4 (AR) community. . The 110-grain Barnes TTSX bullet is a better choice for the .300 Blackout than its 130-grain cousin, but there is another lesson: If you're loading this bullet for a faster-shooting .30 caliber, when impact velocities drop below 2,000 fps, do not expect expansion. It may only be me, butwhen I do encounter a 300 BLK that shoots, its often not a true 300 BLK. In 2011 AAC filed with SAAMI so the 300 Blackout could be chambered and loaded by anyone. Keep in mind, that its wildcat predecessors like the .300-221 were known to be fairly accurate with the right twist rate. If you don't want to complete a build, however, Aero Precision also sells completed rifles. For example, lets say increasing a 300 Blackout barrel from 4 inches to 8 inches results in a 50% increase in muzzle energy. Not a lot, but those high B.C. The 5.56 (pronounced five-five-six), also known as 5.5645 NATO or the 556, was designed in 1980 to work with the AR-15 rifle and is the standard rifle cartridge for all NATO forces, including the United States, England, Germany, and other countries. Youll often hear people say that the ideal barrel for shooting 300 Blackout is 8 or 9 inches. Most people rarely shoot at targets more than 300 yards away with either 5.56 or 300 Blackout. Having a high muzzle energy is nice, but it wont matter if the bullet loses most of this energy before it hits your target. +1 on trying a standard carbine buffer. 300 BlkOut Issues: Failure to Feed, Double Feeds, Stuck Ammo by jFlacoS Sun Dec 29, 2013 2:59 pm Please help with my 300 BlackOut Rifle!!! Please share the pictures of the groups with us on Facebook and what load you are using, I think there is a lot of interest. Since I have two PWS pistols, I swapped out the receiver, and had the same . With that basic understanding out of the way, here are the numbers I used to create the first graph: The bullet drops about 3 inches at 100 yards, 8 inches at 200 yards, 2 feet at 300 yards, 4.5 feet at 400 yards, and 9 feet at 500 yards. For example, a 220-grain 300 Blackout bullet moving at 1,050 fps has 539 ft.lbffar more than both the 5.56 and the 9mm. The 300 BLK has such a small case you are effectively loading pistol powder into a rifle cartridge. 300 blackout optimized with pistol length gas systems. Summary: The sweet spot between maneuverability and muzzle energy for a 300 Blackout barrel is around 7 to 9 inches, although you can get slightly higher muzzle energies with longer barrels. ALWAYS CONSULT COMPREHENSIVE REFERENCE MANUALS AND BULLETINS OF PROPER TRAINING REQUIREMENTS, PROCEDURES, TECHNIQUES AND SAFETY PRECAUTIONS BEFORE ATTEMPTING ANY SIMILAR ACTIVITIES. (Have any suggestions for ammo that should be on this list? lighter spring? If you live alone in a basement then this probably isnt much of a concern, since bullets that overpenetrate will just lodge in your collection of anime sex dolls. Some bullets require a certain barrel length to reach maximum energy, and using shorter barrels makes them far less effective. Finally, some .300 AAC Blackout brass has crimped primers, and there seems to be no rhyme or reason for this occurrence. Aluminum is much lighter than copper or lead, which is why this bullet only weighs 78 grains versus 115 grains for most supersonic 300 Blackout bullets. 7.62x39mm is a respectable cartridge and so is .300 Blackout when it is loaded to supersonic velocity. And, because 300 Blackout bullets are pointed instead of flat-nosed or round-nosed like 30-30 bullets, they are more efficient, more aerodynamic. AR, I did not have to taper-crimp bullets weighing less than 150 grains. Worth the price if your lifes on the line, though. The bullet drops about 4 inches at 100 yards, 2.5 feet at 200 yards, 8 feet at 300 yards, 18 feet at 400 yards, and 30 feet at 500 yards. To learn more about the 7,62x40WT click here. Copyright 1996-2023 AR15.COM LLC. The Ranch Rifle was not quite as accurate as we had hoped, averaging five-shot groups approaching 3 inches from center to center on outside shots. For one thing, even if all of the gunpowder is burned, you can increase the muzzle energy of the bullet by keeping the gasses trapped inside the barrel for longer, allowing more time for them to push on the bullet. Instead, it was designed for combat, which typically takes place within around 300 yards (and the vast majority of that combat occurs within about 100 yards). For example, you can put any of the following uppers on any AR-15 lower . When youre looking for plinking and practice ammo, a good rule of thumb is to look for the absolute cheapest ammo possible, and then go with whatever is slightly more expensive than that. VERDICT: I reviewed an "American" a few . Heres a fun example of this principle in action: Thats a .50 BMG punching through three cinder blocks, and the reason its able to pull this off is because its an extremely heavy bullet moving very fast. Hornady is known for being more or less the top dog of quality ammunition. The first thing that strikes you about this cartridge is the shiny, silver tip of the bullet. But what does this mean for boar and deer killing performance? As weve already covered, a well-designed subsonic bullet can be quite lethal, but its never going to cause as much damage as that same bullet moving at supersonic speed. The reloaded rounds do plunk into the chamber and fall out if you point the rifle up. . In the gel, it acted like a high-velocity pistol bullet, which it isSpeer designed it for the .30 Carbine cartridge. Maximum velocity deviation dropped from 139 fps to 35 fps, and the group shrank to 2.96 inches. Odd, yes, but it has a lot of benefits for hunters and shooters alike. None of the 210-grain VLD handloads cycled the carbine's action. At my shop I won't sell 300 BLK barrels with carbine length gas systems. Keep your gear handy when it's not on your belt. You can get terminal performance beyond the reach of currently offered factory ammo from .300 Blackout handloads. You are using an out of date browser. The muzzle is threaded 5/8"-24 to accept muzzle brakes, flash hiders, or a suppressor. The set-out problem is caused by inadequate neck tension and trying to taper-crimp cases that are not all exactly the same length. Remember, one of the main selling points of the .300 Blackout is that all of the parts are the same as your 5.56mm rifle, except for the barrel. The best hunting ammo will generally include all of the features above, but the particular balance of accuracy, speed, and lethality you want depends on what youre trying to kill as well as your personal preference. Typically, these bullets are the product of thousands of hours of computer-aided design and testing and are much more expensive to make than standard practice ammo, but theyre well worth the cost. By the end, youll know everything you need to know about 300 Blackout ammo, whether you should try it, and what you can expect if you do. I may try and get a carbine buffer and see how that works. The upper functioned flawlessly and accuracy was about 2 MOA, which it turns out, isnt too shabby for a BLK, but was still less than I had envisioned, especially considering the 7.62x50WT and 30 AR rifles I was testing around the same time shot about 1 MOA (read my 30 AR review here). One caliber is one hundredth of an inch, and calibers are written as decimals of 1 inch, like .30-caliber. It will eject the spent brass, but not pickup a new round. Do you care about your Second Amendment rights? With a bullet that isnt over stabilized, factors that can be detrimental to accuracy, such as a concentricity issue, can be mitigated. PRESCRIPTION 7Bullet: Berger 190-grain VLD HuntingPowder/Charge: Accurate 1680/12.2 grainsPrimer: Federal Small RifleCartridge Overall Length: 2.22 inchesMuzzle Velocity: 1,187 fps. One cartridge that has taken ahold of the modern sporting rifle industry and appears to have strong staying power is the .300 AAC Blackout round. Performance varies significantly depending on bullet type and weight, but perhaps the easiest way to understand it as a hunting cartridge is to compare it to the 30-30 Winchester. Momentum! The military was interested in this kind of performance for clandestine operations, I assume. I pulled these numbers out of thin air, but this general principles hold true for all gun barrels. It's probably just the block shifted out of place. This is assuming that both of these bullets were fired through 16-inch barrels, though. The alternative of using the correct magazine is beginning to sound more and more appealing. I have heard you only want to convert brass from the US to 300 Blackout brass. The reason the cases of the 5.56 and 300 Blackout are so similar is because both cartridges need to fit in the same gun. The 300 Blackout was designed to be used with the same boltthe part of the gun that grabs the back of the cartridge, pushes it into the chamber, and extracts it after firingas the 5.56, meaning both cases have to have almost the same dimensions. I took no special pains putting these loads together. While the cross-compatibility of our .300 BLK and 5.56 NATO rifles is highly desirable, it could be a potential risk if we do not check ourselves and make sure we are putting the right rounds into the right firearm. Their 300 Blackout ammo is a little pricey but still affordable, and they were one of the first companies to start producing the cartridge after it was invented. So I recently built a 300 blk out upper and took it out to the range over the weekend and had cycling issues. The subsonic 300 Blackout bullet maintains its velocity better than the other two bullets due to its high ballistics coefficient. And to take things a step further, what if you want to hunt animals like deer, hogs, or even elk with 300 Blackout? This makes the 300 Blackout one of the most versatile and convenient cartridges you can shoot. If you can't buy tires for your car, that's a more significant problem. . Anything more expensive is probably more than you need if youre just tearing up targets and having fun. When was the last time you saw 30-30 ammo offered with anything but 150-, 160-, or 170-grain bullets? Please help with my 300 BlackOut Rifle!!! All AR-15 uppers are standardized to work with AR-15 lowers, so you know that the two parts will always match, too. And other states like Montana, North Carolina, and Vermont dont care what the hell you shoot animals with. A 300 Blackout bullet fired from a 7-inch barrel (like youd find on the. Specifications: Length: 3.8" Width: 2.1" Height: 2.5" Weight: 9.0 oz Water Resistant: Submersible to 10 ft. Mount: 1" Weaver or MIL-STD-1913 rail Power Source: One 123 lithium battery The 5.56, for instance, is designed to reach maximum muzzle energy when fired through a 20-inch barrel, and barrels shorter than that produce less muzzle energy. If that sounds like a rather small case to be necking up to 30-caliber, consider that the Fireball itself was made by shortening the 222 Remington, itself one of our smallest 22 centerfires. Bullets in the Barnes Triple-Shock family typically need more velocity than traditional cup-and-core bullets to expand, and the .300 Blackout just does not generate a lot of velocity. . Frank Green at Bartlein barrels uses the example of High Power rifle competitors using stock Colt 1:7 rifles back in the day experiencing 4 MOA results with 55 grain loads, and sub MOA with the same rifle and shooter using the 69 SMK. The 300 Blackout was designed to be used in AR-15s, with one simple change: As long as you change the barrel of your AR-15, which can be done by popping out two pins and putting on a new upper receiver, you can shoot 300 Blackout ammo out of your AR-15. Both average 1000-1050 fps. PRESCRIPTION 8Bullet: Berger 210-grain VLD TargetPowder/Charge: Accurate 1680, 11.8 grains Primer: Federal Small Rifle Cartridge Overall Length: 2.22 inchesMuzzle Velocity: 1,137 fps. than 5.56 ammo. Once you couple in the fact that ammunition and reloading component manufacturers produce extremely diverse bullet geometry as well, it is becoming clearer as to why you need dedicated .300 BLK magazines. I found somebut not allHornady and Remington brass had crimped primers. Unfortunately, small variations in the shape of the cartridge can cause ammo to snag, jam, or feed slowly. A big part of the attraction to having .300 Blackout is to put a silencer on it and feel super operator pew-pewing subsonic ammo. You gain a .30 caliber cartridge that can be fired from a traditional 5.56 NATO/.223 lower receiver (Whats the difference between 5.56 and .223? 4500$, Caliber: Discreet Ballistics also went to great pains to ensure that the bullet was as accurate as possible when fired through a suppressor, which is their modus operandi. Even with vertical stringing apparenta result of the supersonic/subsonic velocity mixthe 190-grain VLD load was more accurate than any of the subsonic factory loads I tested. The 7.62 Soviet's cartridge taper prevented reliable feeding in AR magazines and created wear on the bolt. This significantly bumps up the muzzle energy without exceeding the speed of sound. It fires a .30-caliber, 110 to 220-grain bullet and reliably works with and without a suppressor. I have tried a lighter weight buffer as well. I even took the time to order a special 1:7 twist barrel from Bartlein barrel to give me the edge with the heavy loads. The Savage Axis II also builds a little weight into the tube with the diameter just to the rear of the 5824 threads coming in at 0.75 inches. One ftlbf is equal to about 1.355 J, and its the amount of energy it takes to raise one pound by one foot. To get down to the nitty gritty; live rounds are "being left" in the chamber. Instead of being made of solid lead and copper, like most bullets, frangible bullets are made of a mixture of compressed metal powders. . ) by jFlacoS Sun Dec 29, 2013 11:13 am, Post With some loadsparticularly those using the 125-grain Nosler. The best way I've found to solve this problem is to size brass without the expander ball in the die. Andrew Betts served with the Arizona National Guard for over 12 years, including a tour to Afghanistan. Whether you're using a 7.5-inch, 10.5-inch, or even 16-inch barrel, sub-sonic .300 BLK vastly outperforms 5.56 NATO when fired from a suppressed rifle. None of the metal fragments penetrated more than 16 inches, which is exactly what you want with home defense ammo. Not only that, but it's also more powerful than 5.56 when fired through short-barreled rifles or when using subsonic ammo. It should be equally or more powerful than the 7.6239 cartridge (AK-47 ammo) when fired from 9-inch barrel. Finally, they also give you a choice between two different cartridge loads, which refers to how much gunpowder is loaded into the case of a cartridge. The NRA, its agents, officers and employees accept no responsibility for the results obtained by persons using such data and disclaim all liability for any consequential injuries or damages. views and opinions of Springfield Armory. Theres one part of the AR-15 that doesnt always play nice with different kinds of ammo, though, and that is the magazines. I used load data from Hodgdon and Accurate, but my first attempt yielded supersonic velocities. So while some of us have chased after .300 BLK for its usefulness in hunting medium-size game, potentially defense, or even for the recreational enjoyment of the round, its safe to say that we will all experience more pleasurable range time with a dedicated .300 BLK magazine for our .300 BLK firearms. PROS: Straightforward design; 7" barrel twist; Great compact rifle handling character. Unfortunately, reducing the speed of a bullet also significantly reduces its energy. The chief advantage of 300 Blackout is its versatility. In the case of home defense, you want to incapacitate the person as quickly as possible, which basically means causing as much damage as possible. Technically, the only proper names for the cartridge are the 300 AAC Blackout or 300 BLK, but most people refer to it simply as the 300 Blackout, so I did the same in this article for the sake of simplicity.

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