This matters because in most home defense or combat scenarios, you arent going to have a good shot at your enemy. (At my location the speed of sound was about 1,143 fps on the test date.) These Visit his YouTube Channel for more great shooting information. PRESCRIPTION 5Bullet: 130-grain Hornady SPPowder/Charge: Hodgdon Lil'Gun, 19.0 grainsPrimer: Federal Small RifleCartridge Overall Length: 2.02 inchesMuzzle Velocity: 2,259 fps. The ability to shoot 30 caliber bullets from a standard AR-15 M16/M4 style rifle bysimply changing the barrel and ammunition has made the 300 AAC Blackout (300 BLK) a popular choice for AR shooters looking for an alternative to 223 Remington/5.56 NATO. If a 50-grain bullet from the Fireball can do in a hog of this size, the 300 Blackout should have no problems. It's a fun, lower velocity round that can really pack a punch. by 20X11 Sun Dec 29, 2013 10:50 am, Post Its so bad in this regard that it often doesnt penetrate as well as 9mm ammo. certified instructor prior to handling any firearm and be sure to read your owners manual. It isn't the "cheap" "crappy" factory. For a better experience, please enable JavaScript in your browser before proceeding. Adam is a manager at The Guns And Gear Store in Waite Park, MN. The recovered diameter (RD) was measured in inches across the face of the bullet in two spots and represents the average of those two measurements. 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? This load should also work well in a self-defense role where over-penetration is a concern. The gun cycles and the bolt goes back into the fully closed position, but does not put another round in the chamber. As this bullet penetrates into someone the aluminum nose of the bullet is pushed back into the copper base. Jason Imhoff then drafted the specifications for the cartridge that would eventually be approved by SAAMI. Keep in mind, that its wildcat predecessors like the .300-221 were known to be fairly accurate with the right twist rate. As you learned a moment ago, the 300 Blackout has significantly more muzzle energy when fired through short barrels than the 5.56. Sorry, an error occurred and we could not sign you up. As you can see, the 300 Blackout has about 100 (ftlbf) more energy than the 5.56 at almost every distance. by 20X11 Sun Dec 29, 2013 11:19 am, Post Thus, the 300 Blackout cartridge refers to a particular bullet and case combination. In case you arent familiar with the term, plinking refers to more or less randomly shooting at stuff for fun, in a safe manner. lighter spring? Second, theres the fact that this bullet causes a lot more damage than a hollow point 5.56. Two of these loads failed to fully cycle the action of the AAC MPW carbine. Some would even say the 300 Blackout is too good at penetrating obstacles. 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. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. The same properties that make 5.56 bullets fragment inside people also make it break apart when it hits wood or metal. This causes the animal to bleed faster and die sooner than if the bullet only enters but doesnt exit. Theres a lot of crossover between home defense ammo and hunting ammo because the intended purpose of both is similar. What's the problem with the caliber based on this thread? You can expect to pay anywhere from $1.5 to $3 per round for high-quality subsonic 300 Blackout hollow points. I pulled these numbers out of thin air, but this general principles hold true for all gun barrels. 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 must log in or register to reply here. Are you running a can with your subsonic and are the subs factory or handloads? Summary: Unlike 5.56 or .223 Remington, 300 Blackout ammo is highly effective and legal for deer hunting in all almost every state. Surf around on Internet forums, and youll often see people saying they would never use a 300 Blackout for home defense because it will overpenetrate. For example, you can put any of the following uppers on any AR-15 lower . 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. Unfortunately, many companies are often out of stock of 300 Blackout ammo in this price range, but Sellier and Bellot, Magtech, and Armscor tend to be easier to find. The Hornady Full Metal Jacket Frontier 300 Blackout ammo is their value target practice cartridge, but since its Hornady its more than good enough for classes and competition. Its more powerful than 5.56 ammo when shooting subsonic (quiet) bullets. Q: Can you provide your insight regarding the 300 blackout cartridge and its use on boar & various species of deer? Where are you located and maybe somebody local can take a look at your gun. AR brass has thicker neck walls than .300 AAC Blackout brass, sizing without the expander ball will still increase the neck tension in loads of the latter. The 300 blackout measures 0.145" and the 5.56 measures 0.175". For bulk practice ammo I wet tumble all my 223 (5.56) / 300 blackout after resizing on the 650/RT1500. Well, firstly, the aluminum nose of this bullet allows it to penetrate relatively soft obstacles like drywall, glass, and plywood without falling apart like 5.56 would. I took out the carrier bolt assembly, and re-oil it and still the same problem. It cycles supersonics fine, it cycles the subs with a borrowed suppressor just fine, but it's not getting enough gas to run subs with no can. Although the cases are similar, the 300 Blackout case is shorter, which reduces the amount of gunpowder that can fit in the case by about 25% versus the 5.56. 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. 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. The 300 AAC Blackout was designed to achieve energies similar to the 7.6239mm Soviet in an AR-15 while using standard AR magazines at their full capacity. I may try and get a carbine buffer and see how that works. You must have JavaScript enabled in your browser to use this website. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Assuming it takes two shots on average to kill most game, including missed shots and the occasional berzerker boar that needs a mag dump, that means youre only spending $3 to 6 per animal. There's a narrow band of powders that work well with the .300 Blackout. At my shop I won't sell 300 BLK barrels with carbine length gas systems. . Crooks are wearing body armor more frequently when committing home invasions and soft armor can be found in many pawn shops or online for less than you might think. For example, I have an AR-15 upper that fires 5.4539, but I have to be careful which magazines I use as some of them simply wont feed this Russian ammo properly. Imagine dumping a pile of money into a rifle and having it shoot some loads nearly 4 MOA!- I was that guy- something I seldon experience during the load development process. 300 Blackout AAC. bullet all the way up to 220 grains. If your first priority is subsonic performance from a .30-caliber AR, go with the .300 AAC Blackout and heavy bullets. Copyright 1996-2023 AR15.COM LLC. They arent exactly the same, but they have nearly the same performance and can be thought of as the same cartridge when it comes to ballistics comparisons. In case you arent familiar with the term, home defense refers to the practice of defending yourself against bad guys who break into your house. I first tried opening gas port, still wasn't perfect, switched to vihtavouri 530 powder, and works great. Well talk more about how the 5.56 and 300 Blackout stack up against one another in a moment. As an added bonus, its all-copper construction means you dont have to worry about picking slivers of lead out of your steaks. The muzzle is threaded 5/8"-24 to accept muzzle brakes, flash hiders, or a suppressor. 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. This is certainly the prominent selling pointof the cartridge, but one of the areas the 300 BLK will sometimes lack is accuracy. I am using reloaded ammo (220 gr jacketed) and have shot thru a chronograph at about 1050 fps. This table shows the velocity of the three bullets weve discussed so far at six different ranges. When combined with a suppressor, 300 Blackout ammo can give you one of the most powerful, nearly silent rifles you can have. In the case of hunting ammo, you want your bullet to penetrate deep into the animal and if possible, go completely throughentering one side and flying out the other. I used load data from Hodgdon and Accurate, but my first attempt yielded supersonic velocities. Energy is measured in foot-pounds of force (ftlbf), or Joules (J) if you prefer the metric system. 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. Oops, there's been an error. The cartridge, primarily intended for hunting, offers a greater case capacity and comes with a 1:12 twist (so you cant stabilize the heavies). So if you enjoyed this, would you share it on Facebook and Twitter? That bullet is more blown open than a T-1000 after a run-in with Arnold Schwarzenegger. Impact velocity was obtained with a Shooting Chrony positioned in front of the gel block. The 300 Blackout shooter is getting 30-30 performance with about one-third the powder and slightly less recoil. If you are looking for a cartridge that can run with subsonic and supersonic ammunition in your AR, it is a great choice. and opinions expressed on this website are those of the authors and do not necessarily reflect the 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. Momentum! I appreciate all the advice. by jFlacoS Sun Dec 29, 2013 11:13 am, Post Penetration indicates the point in the gel block where the largest piece of the bullet came to rest in inches. The unknown issue many .300 BLK shooters are combating without even knowing it is their 5.56 NATO/.223 magazines will not reliable feed all grain weights and bullet profiles of the .300 BLK. I also have the problem, that the 300 neck is always 2-3mm to high, so that I need to re-size the trimmed cases again. The bottom line is the Lehigh Defense 300 AAC Blackout 78-grain High Velocity Close Quarters cartridge is one of the single best cartridges for home defense you can buy. Years later, I headed out the range with a custom Remington Model 7 chambered in 300 BLK. Did you say 16" barrel with a midlength gas system? On the other hand, skeptics claim that 300 Blackout ammo is overrated, overpriced, and flat-out inferior to most other kinds of ammo you can shoot. Unfortunately, reducing the speed of a bullet also significantly reduces its energy. It's usually the shorties - under 10" - that need the can to cycle with subs. Frangible bullets are a little different. My personal experience mirrors this. And to take things a step further, what if you want to hunt animals like deer, hogs, or even elk with 300 Blackout? With subsonic ammo and a suppressor, your 300 Blackout will also be as quiet as its possible for a gun to be and significantly more powerful than 5.56 and 9mm. The bullet almost exploded inside the gel block, shredding the first 8 inches. . If you were to keep pushing on the car, thoughnot necessarily pushing any harder but pushing on the car for longerthen it would gather even more speed and move even further. If you want to fire 300 Blackout through your AR-15, all you have to do is buy a 300 Blackout upper, slap it on your AR-15 lower, load up your AR-15 mags with 300 Blackout ammo, and start shooting. Not only do hollow points create much larger holes, they also cause the bullet to slow down much faster after entering the target, reducing the chances that itll pop out the other side. In order to make your rifle Hollywood quiet, you have to do two things: Ill cover how suppressors work in another article. The 300 Blackout has become one of the most popular rifle cartridges available. . My conclusion is the 125-grain AccuBond needs a crimping groove. Youll be able to kill just about anything your little heart desires with a supersonic 300 Blackout bullet fired through a 7 to 9-inch barrel within 300 yards. . The only downside of hollow points and frangible bullets is they typically cost about a dollar per round. Before we go any further, its worth spending just a moment to get acquainted with the 5.56, as well be comparing it to the 300 Blackout throughout this article. But that momentum is just as effective for the hog hunter. Theyre designed to lock onto the gun and then push fresh cartridges into the inside of the gun so they can be chambered and fired. Ballistics data gives you a means of comparing one cartridge to another so that you can tease out their strengths and weaknesses and decide which one is the best choice for different jobs. PRESCRIPTION 1Bullet: 110-grain Sierra HPPowder/Charge: Hodgdon Lil'Gun, 20.0 grainsPrimer: Federal Small RifleCartridge Overall Length: 1.89 inchesMuzzle Velocity: 2,402 fps. You see where this is going, dont you? The 300 Blackout, though, is much wider and longer than the 5.56, and its designed to use a bullet that weighs up to 220-grainsalmost four times heavier than standard 5.56 ammo. A Magpul .300 BLK PMAG (left) and a 5.56 PMAG (right). Known for its ability to deliver heavy subsonic bullets for standard AR magazines while cycling the action in suppressed applications, [], Ive done a few Special Purpose Rifle (SPR) builds over the years and was always happy with the results. This had a horrible effect on accuracy. Accuracy was not. After reducing the powder charge, eight of the next 10 rounds were subsonic. Bullets with more drop arent inherently less accurate, per se, but the more a bullet drops, the more skill is required to adjust for this so that the bullet hits where intended. 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.. Advanced Armament Corporation tweaked the round for solid performance in the M4 rifle. PRESCRIPTION 6Bullet: 150-grain Nosler Ballistic TipPowder/Charge: Hodgdon Lil'Gun/17.0 grainsPrimer: Federal Small RifleCartridge Overall Length: 2.18 inchesMuzzle Velocity: 2,058 fps. I will try some other loads and see if I can keep sub and still cycle. Trouble with RCBS 300 Blackout Dies Not Seating Bullets Consistently March 31, 2021 If you're having trouble with RCBS or Hornady 300 blackout dies not seating bullets consistently, this should help. Click the Go To Forum Thread link below to jump in and discuss this article and much more! 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. Remove the gas block and look for off-center carbon ring where the block meets the hole in the barrel. We have to pick a number, though, so lets run with the Hornady Sub-X Subsonic 190-grain bullets, which have a ballistics coefficient of 0.437which is probably close to the average for subsonic 300 Blackout bullets. I dont have comments enabled on this site, to discuss this post, feel free to comment on it there. This additional mass gives the 300 Blackout a lot more momentum to push through obstacles and into your target. You are using an out of date browser. 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. All else being equal, a bullet with a lower BC will slow down faster, whereas a bullet with a higher BC will maintain its velocity for longer. The Oxford English Dictionary also defines it as the study of the effects of being fired on a bullet, cartridge, or gun.. 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. So, how do you maximize bullet energy without exceeding the speed of sound? The only prep work I did before loading was sizing the cases, tumbling them and chamfering their necks. As a general rule, then, you want your bullets to shoot flat, or with as little drop as possible. You see, just because all of the gunpowder in a cartridge is burned doesnt mean that increasing the barrel length doesnt offer any benefits. If it's not feeding the next round you might try a lighter weight buffer or a different magazine or different type of magazine with a different spring rate. At 200-yards drift is 4.5", energy nearly 418 f-p. A long, heavy bullet like that is going to penetrate like a steel rod, which is likely why the military is interested in it as a tactical weapon and some view it as a good self defense option. Someone once told me that .300 Blackout is the most convenient way to shoot 7.62x39mm in an AR type rifle. Then show it finally being reso. . 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. PCCs may seem like a good idea at first glance, but when you get down to brass tacks they offer all of the disadvantages of a rifle (too large to conceal or carry conveniently and not easily operated with one hand) with the primary disadvantage of a pistol (weak ammunition). The problem is that there are quite a few folks out there that just cannot seem to understand that a rifle bullet that is no longer moving at 2,000 fps, give or take, is not really much of a rifle bullet any more. If youre going to use 300 Blackout ammo for hunting, though, its essential that you use hollow points, which are significantly more effective at killing big game than full metal jacketed bullets. Whats your take on 300 Blackout ammo? However, the 130-grain TTSX did not, mainly because the heavier bullet could not achieve as much velocity. Terminal performance was excellent. Thanks to its unique design, though, it will still fall apart and not overpenetrate if it hits a tougher obstacle like a thick wooden wall, a car, or a tree. 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. 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. Not only does subsonic ammunition perform far more poorly in tissue, it also gives up one of the other primary advantages of a rifle: the ability to penetrate soft body armor. . None of the primers in Lehigh Defense brass were crimped, but all of them in the Federal brass were crimped. It fires a .30-caliber, 110 to 220-grain bullet and reliably works with and without a suppressor. JavaScript is disabled. 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. PRESCRIPTION 2Bullet: 110-grain Speer Deep Curl RNPowder/Charge: Hodgdon Lil'Gun, 19.3 grainsPrimer: Federal Small RifleCartridge Overall Length: 1.77 inchesMuzzle Velocity: 2,401 fps. Some people even go so far as to say that anything longer than a 9-inch barrel for a 300 Blackout is a complete waste of space and weight. . I tried this for several rounds with the same thing each time. ***What AR-10 Buffer/Spring are you running with the Magpul UBR? Weakening key points along the length of the ogive so that slivers of the bullet poke out at angles designed to cause maximum trauma inside the target. 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. In many ways, the 300 BLK in design terms is the opposite of a modern match cartridge like the 6mm BR or 6.547 Lapua. I dont want to knock the 30-30 here, but its also true that the Blackout is more versatile than the 30-30. . You can increase the weight of a bullet, but this is limited by the size and design of the barrel youre using. . Thanks for the help. I am using Lil'gun powder. Do you have a 300 BLK that hammers (say, five 5 shot groups under 1 MOA in a row)? When a bullet hits a target, the energy from the bullet is imparted to the material it hits, causing it to break apart. Theres one part of the AR-15 that doesnt always play nice with different kinds of ammo, though, and that is the magazines. Solution for 300 AAC Blackout jamming! It cycles fine with supersonic ammo. 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!!! In most cases this means nothing. By the time both bullets have traveled about 500 yards, theyre moving at almost the same speed. Testing was conducted at an elevation of 2,200 feet above sea level. Had problems with cycling both. Lining up and Picking Sides - A WW3 Story. When youre blasting rotten fruit, rubber balls, and reinforced steel plates without any other goal than to see and hear things go splat and ping, then youre plinking. Now, to calculate a bullets energy on target, you need a few pieces of data: Bullets have the most energy right after they exit the muzzle of the gun, and this number is referred to as a bullets muzzle energy. The 300 Blackout (pronounced three-hundred black out), officially known as the 300 AAC Blackout or the 300 BLK, or 7.6235, is a rifle cartridge designed to be fired through AR-15 rifles with shorter-than-average barrels. Most people rarely shoot at targets more than 300 yards away with either 5.56 or 300 Blackout. Let me know in the comments section below! Longer barrels will produce more muzzle energy, of course, but not substantially so. 4500$, Caliber: I will try some other loads and see if I can keep sub and still cycle. At 400 yards, though, the bullet has dropped almost 5 feet. Some bullets are designed to be fired through longer barrels, and some are designed to be fired through shorter barrels. I took no special pains putting these loads together. What barrel and gas tube length? An adjustment in overall length might correct this problem. The nose of the bullet is made of solid aluminum and the base is made of solid copper. Finally, some .300 AAC Blackout brass has crimped primers, and there seems to be no rhyme or reason for this occurrence.
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