problems with 300 blackout

The Blackout with a 220- or 225-grain bullet can be driven at least 1,000 fps from a 16" barrel to give about 488 foot pounds of energy at the muzzle. I may try and get a carbine buffer and see how that works. The data has not otherwise been tested or verified by the NRA. Heavy, slow moving subsonic bullets experience more bullet drop than fast, more aerodynamic bullets. Shooters who join the .300 BLK bandwagon may attribute issues they experience in failure-to-feed (FTF) or failure-to-eject (FTE) to their rifle when in fact, they should take a more discerning look at the magazines they are using. The best way to understand bullet drop is to visualize it, which is easy if you use a ballistics calculator. If youve spent any time poking around online, youve likely heard its . In the gel, it acted like a high-velocity pistol bullet, which it isSpeer designed it for the .30 Carbine cartridge. There are three key points worth noting about this data: Summary: You can easily make accurate shots with supersonic 300 Blackout ammo up to 300 yards away and 200 yards away with subsonic ammo. The 7.62x40WT is a nifty little cartridge for the modern hunter who wants to stalk game with a standard sized AR-15 M16/M4. On the other hand, if you are looking for a high-performance, supersonic cartridge that will run in an AR, there are better options in a variety of calibers. 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. 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. 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. | An Official Journal Of The NRA, Should You Carry Your Gun With an Empty Chamber? There's a narrow band of powders that work well with the .300 Blackout. Advanced Armament Corporation tweaked the round for solid performance in the M4 rifle. You grab some friends, line up behind the car, put your hands on the bumper, and push as hard as you can. Is the 300 Blackout just a new knickknack for tearing up targets at the range, or is it the better mousetrap weve been promised? This test is a good example of the penetrating power of 300 Blackout: In the video, a 300 Blackout bullet penetrates 24 inches of pinewood whereas a 5.56 bullet only penetrates 16 inches of pinewood. by jFlacoS Sun Dec 29, 2013 12:50 pm, Post While neither are well suited for long range shooting, they are more than adequate at close to medium range. The alternative to not using an actual .300 BLK magazine is to employ a 5.56 NATO/.223 magazine and then exercise more than stringent ammunition management to ensure a failure does not occur. Oops, there's been an error. I used the following data for these calculations: (Although these cartridges are slightly different, their stats are fairly representative of average 300 Blackout and 5.56/.223 ballistics.). I had the same problem with the exactly the same ammo, Remington 300 BLKOUT 7.62x35mm 115 gr Close Tip Flat Base. The leader in the shooting industry for modern sporting rifle magazines is Magpul, and their .300 BLK magazines have an optimized internal geometry that accommodates a wide variety of .300 BLK cartridges. In laymans terms, that is exactly what we are looking for a magazine made for the varying bullet types, grain weights and shapes that come with the .300 BLK cartridge. The AccuBond's jacket is thicker than most conventional bullets, and the core is not pure, soft lead, making it harder for a taper crimp to take hold. 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. Magazines have a hard time feeding when you pack a mag . I like my 300 BLK, but see it for what it is. All AR-15 uppers are standardized to work with AR-15 lowers, so you know that the two parts will always match, too. To meet these requirements, they looked to a similar cartridge called the .300 Whisper, which was created by noted firearms cartridge designer J.D. Springfield Armory recommends you seek qualified and competent training from a He is a Glock and Smith & Wesson Certified Armorer as well. 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. The 5.56 is more or less the opposite of the .50 BMGits half as wide and 10 times lightermaking it pretty worthless for penetrating through barriers. Knocks the burs left right off. The best way I've found to solve this problem is to size brass without the expander ball in the die. The vast majority of states, though, including my native Virginia, dont allow you to shoot deer with 5.56 ammo, which presents a problem: How can you use your beloved AR-15 to go deer hunting? 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. It penetrated more than 32 inches in gelatin and showed no expansion. . I just built a .300 blackout pistol and took it to the range for the very first time today and had some failure to feed issues. There was, however, a concern: The load would only feed about 50 percent of the time. This is assuming that both of these bullets were fired through 16-inch barrels, though. Ive gotten quite a few emails from shooters with experiences mirroring mine. Youll need to practice with the right optic, but with training you could learn to hit a man-sized target on your first shot at that range. The same properties that make 5.56 bullets fragment inside people also make it break apart when it hits wood or metal. In most cases this means nothing. The most accurate handload beat out the best factory load by .60 inch when both were fired from the same gun. Written By Michael Crites Licensed Concealed Carry Holder Reviewed by Bullet trajectory is the path of a bullet as it makes its way to the target. "Not cycle" can mean several things - does it extract and eject the fired round but not feed the next round, something else? The only problem I ran into while handloading the .300 Blackout was with bullet set-out when the cartridge was chambered. In short, the 300 Blackout is definitely worth investigating. TNVC/NGI Giveaway: 15 winners with over $7000 worth of prizes!! and opinions expressed on this website are those of the authors and do not necessarily reflect 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 From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. So I recently built a 300 blk out upper and took it out to the range over the weekend and had cycling issues. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Did you say 16" barrel with a midlength gas system? By utilizing a fast twist to stabilize the long heavy subsonic bullets, I suspect accuracy suffers on the lighter loads. 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? Ammo used was Remington 125gr supersonic and 220 subsonic. What's the problem with the caliber based on this thread? It is absolutely true that supersonic .300 Blackout is every bit as effective as other intermediate rifle cartridges such as 5.56mm or 7.62x39mm. I used load data from Hodgdon and Accurate, but my first attempt yielded supersonic velocities. 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. When the tip came off, the bullet slightly opened up and began tumbling, which caused the core to separate from the jacket. 7.62x39mm is a respectable cartridge and so is .300 Blackout when it is loaded to supersonic velocity. Penetration was deep due to lack of expansion, but the wound cavity was narrow. Theres one part of the AR-15 that doesnt always play nice with different kinds of ammo, though, and that is the magazines. This means smaller powder charges and faster powders. I have tried a lighter spring and heavy lubrication with no success. 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). And, because 300 Blackout bullets are pointed instead of flat-nosed or round-nosed like 30-30 bullets, they are more efficient, more aerodynamic. Set-out was a noticeable problem only with the Nosler bullets, but it could have been occurring with other bullets, too, and just not showing up as glaringly on target. by pschier Sun Dec 29, 2013 10:08 am, Post As a general rule, then, you want your bullets to shoot flat, or with as little drop as possible. With a 16" barrel and mid length gas system it 'should' be able to cycle using subsonic ammo even without a can. The cartridge simply cannot push them fast enough to ensure expansion. 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This is why theyve become popular for home defensetheres no risk of overpenetration. Frangible bullets are a little different. 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. I tried taking one of the weights out of a carbine buffer, and it moved ejection from 5 to 3 o-clock, but it still wouldn't pick up the next round. And heres how it looks compared to several other common rifle cartridges: The three cartridges on the left are different kinds of 300 Blackout ammo, followed by a 5.56 cartridge and a 7.6239 cartridge on the right. 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 aluminum nose of the Lehigh Defense bullet also helps it feed into the chamber better than many hollow point designs. It can be used in AR-15s with minimal modification. The 5.56 bullet disintegrated after penetrating only a few boards, whereas the 300 Blackout stayed intact as it sliced through every single board in this test. Bill Marr Keep in mind, that its wildcat predecessors like the .300-221 were known to be fairly accurate with the right twist rate. In my experience the 300 Blackout runs best with a pistol length gas system. Like the same mid-length gas that's on a 5.56/223 rifle? For comparisons sake, lets look at the trajectory of a standard 55-grain 5.56 bullet fired under the same conditions. Not in the sense that leaving a bottle of lotion on the coffee table and playing Goodbye Horses is a terrible way to impress a date, but it also isnt what most of the breathless fanbois are fainting over, either. I spent several hours chambering dummy cartridges with a variety of bullets and measuring set-out, and in fact, I found it occurred to some extent with every bullet tested. A grain is a unit of measurement used in the firearms industry for measuring bullet weights, equivalent to about 1/15th of a gram. When you try to shoot further than that, though, youre better off using a different cartridge. ratings mean they actually shoot . There is no argument that shooting a quiet rifle is a lot of fun, but fun does not stop bad men from doing bad things and subsonic bullets dont do a great job of stopping them, either. The advantage of 300 Blackout is if the shooter wants an AR-pattern rifle or pistol that is easily suppressed, they can use a common magazine and typically only need to swap an upper receiver. Both average 1000-1050 fps. Perhaps one of the most sobering problems with .300 Blackout is the ability to chamber in a .223 or 5.56mm barrel. I'm a huge fan of the 300 Blackout round. If you want to shoot it through your AR-15, all you have to do is buy a 300 Blackout upper, load up your regular AR magazines with 300 Blackout ammo, and start shooting. Itll reliably kill deer, hogs, and people within those ranges, too. 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. The bolt wont close on a .300 Blackout round if it is closed slowly, but if the round has low neck tension, the momentum of the bolt carrier can force the bullet back into the case, allowing the bolt to close and lock. If youre using subsonic bullets, then cut that range in half. Even worse is when a combine that harvests grain needs a part only made in China. Okay, so it isnt terrible exactly. And how does that affect real-world accuracy? That's it. Its so bad in this regard that it often doesnt penetrate as well as 9mm ammo. and 5.56 NATO loads. Born in the early 2010s when a few unnamed military special operators needed a specialized close-combat round, the .300 AAC Blackout is no passing fad -- the BLK has become one of the most popular AR cartridges around. You have to step up to the true heavyweights to get below the speed of sound. I subjected these .300 Blackout handloads to a testing protocol similar to the one I used to evaluate the factory ammo. As you learned a moment ago, the 300 Blackout has significantly more muzzle energy when fired through short barrels than the 5.56. If your first priority is subsonic performance from a .30-caliber AR, go with the .300 AAC Blackout and heavy bullets. I will try some other loads and see if I can keep sub and still cycle. The gas tube is pinned. So, who is right? I pulled these numbers out of thin air, but this general principles hold true for all gun barrels. I will try some other loads and see if I can keep sub and still cycle. Despite losing 28% of its velocity, the 5.56 is still moving 34% faster than the supersonic 300 Blackout at 200 yards, making it the better choice at that range. In the case of home defense ammo, you generally dont want the bullet to go through-and-through as its called. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. ***What AR-10 Buffer/Spring are you running with the Magpul UBR? Here are the Best .300 blackout rifles (Our Picks) 1. In previous testing, the special-built 110-grain Barnes TTSX bullet loaded in the Barnes Vor-Tx and DoubleTap Tactical offerings delivered the usual, outstanding Triple-Shock terminal performance. Just like with the 190-grain VLD handload and most factory subsonic loads, bullet expansion was nonexistent and penetration was excessive. 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. I recently finished a 300 blackout SBR build and I'm having some failure to extract issues. All in all, its probably a better cartridge for killing deer than 5.56, so not only is it legal its also preferable. If so, that's your problem. When a bullet hits a target, the energy from the bullet is imparted to the material it hits, causing it to break apart. This presents little problem if you do not already own a 5.56mm rifle, but it seems fair to wager that the majority of prospective .300 Blackout owners also own AR-15 type rifles chambered in 5.56mm. The second a bullet leaves the muzzle of a gun, gravity begins pulling it toward the ground. First, a bit of history on this odd cartridge. What's the load data? I am using a can. 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. I have heard you only want to convert brass from the US to 300 Blackout brass. With that out of the way, lets look at the bullet drop of the 300 Blackout. My conclusion is the 125-grain AccuBond needs a crimping groove. 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. The further a bullet has to travel after being fired, the more time there is for drag to slow it down. So, instead of continuing to beat this horse, lets look at how the 300 Blackout compares to the 5.56 in terms of muzzle energy. Perhaps one of the most sobering problems with .300 Blackout is the ability to chamber in a .223 or 5.56mm barrel. I'm having a similar issue with a friends blackout pistol. One caliber is one hundredth of an inch, and calibers are written as decimals of 1 inch, like .30-caliber. Early on, the claimed goal was to have ammunition prices on par with the inexpensive .223 Rem. For a better experience, please enable JavaScript in your browser before proceeding. 300 Blackout ammo is legal for hunting deer in almost every state as long as you use supersonic ammo, and its legal in many states with subsonic ammo, too. When combined with a suppressor, 300 Blackout ammo can give you one of the most powerful, nearly silent rifles you can have. To establish accuracy potential and velocity boundaries, I fired one, 10-shot group at 100 yards with each load. To increase bullet energy on target, increase the barrel length or the bullets ballistics coefficient. Blackout ammo is loaded with a surprising variety of bullets from 78-grains to 220-grains with 110-grains quite popular at 2,300 fps to 2,400 fps. When was the last time you saw 30-30 ammo offered with anything but 150-, 160-, or 170-grain bullets? This is due to the 300 Blackouts bullet and case design, which allow the gunpowder to be more quickly and efficiently burned in a shorter barrel.

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