Thats not an issue with 300 Blackout ammo, though. It isn't the "cheap" "crappy" factory. You may discover published data will generate supersonic loads, and you may need to reduce powder charges to ensure each bullet remains subsonic. To meet these requirements, they looked to a similar cartridge called the .300 Whisper, which was created by noted firearms cartridge designer J.D. Heres what several 300 Blackout bullets looks like when removed from their cases: As you can see, one of the defining characteristics of the 300 Blackout is its long, steep, sharply tapered bullet. You can find factory, boxed ammunition anywhere from a 110-gr. You see where this is going, dont you? ), you have the overlap of a 5.56 NATO/.223 bolt-carrier group (BCG), and you can use 5.56 NATO/.223 magazines as well sort of. 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. A cartridge with a higher-pressure load contains more gunpowder, and a cartridge with a lower-pressure load contains less gunpowder. 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. The second a bullet leaves the muzzle of a gun, gravity begins pulling it toward the ground. Although .30 Rem. by Eddy Coleman, Gilmer, Texas Eddy's Reloads 5.57K subscribers Subscribe 21K views 6 years ago Repairing reloaded bullets that made a 300 blackouts. Think again. At my shop I won't sell 300 BLK barrels with carbine length gas systems. 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. To increase bullet energy on target, increase the barrel length or the bullets ballistics coefficient. Spikes likes to use "HeavY" buffers in their kits for .223, 300 BlkOut Issues: Failure to Feed, Double Feeds, Stuck Ammo, http://www.youtube.com/watch?v=iVzCQ0LL2A8, Re: 300 BlkOut Issues: Failure to Feed, Double Feeds, Stuck. Magazines have a hard time feeding when you pack a mag . by jFlacoS Sun Dec 29, 2013 10:42 am, Post Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 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. Its base, capped with a bit of lead core, penetrated to approximately 15 inches but was only about the size of an aspirin. You can find brands that make better ammo for certain applications, but its hard to match both the quality, quantity, and value of Hornady ammo. than 5.56 ammo. Beyond the upgrade in bullet diameter, the 300 BLK offers the versatility of heavy 220 grain plus subsonic projectiles as well as lighter supersonic offerings. Thats why I recommend Lehigh Defense 300 AAC Blackout 78-grain High Velocity Close Quarters cartridge. 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. Theyre going to be hiding behind rocks, walls, trees, and other obstacles, and being able to punch through this cover and plug them before they plug you is a major advantage. Because 300 sounds more powerful than .30, which is why many companies refer to .30-caliber bullets as 300- something or other, like the 300 Winchester Magnum and 300 Norma Magnum hunting cartridgesall of which fire .30-caliber bullets. You can see the similarity of the case sizes in a picture like this: The cartridge on the left is the 5.56, the one in the middle is the 300 Blackout, and the one on the right is the 7.6239. The M4 profile is light under the handguard and .750" at the gas block with the M203 cut. We dive deep into the best of the .300 Blackout. Had problems with cycling both. 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 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. Copyright 1996-2023 AR15.COM LLC. For example, the absolute cheapest you can get 300 blackout is generally around 50 cents per round, so expect to play closer to 60 to 75 cents per round for your everyday practice ammo. 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. Summary: The 300 Blackout was designed from the ground up to work seamlessly with the AR-15. Thats enough of a drop to seriously affect your accuracy when shooting at a target 100 yards away. 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. Its literally how much bang you get for your buck. Ballistics is the science of projectiles and firearms. The bolt will not lock back with an empty mag. The Glock 17 has a 4.5-inch barrel and generally produces muzzle velocities of around 1,150 fps with 124-grain bullets. You might be able to hit something further than that, but dont count on it. 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. Once you start trying to do other things with the 300 BLK, better options emerge. The bullet also weighs in at a hefty 188-grains, which gives it enough mass to keep pushing deep into the target after expanding. The 5.56 starts out moving faster than the 300 Blackout, but loses velocity quickly due to its light weight and low ballistics coefficient. Written By Michael Crites Licensed Concealed Carry Holder Reviewed by 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!!! through a short-barreled AR-15 . . I first tried opening gas port, still wasn't perfect, switched to vihtavouri 530 powder, and works great. ratings mean they actually shoot . 2023 Springfield Armory. It's probably just the block shifted out of place. 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. . . 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. They came up with a solution for that problem, too. when loaded with fairly standard 220gr subsonic rounds, that guide presses into the projectile of the subs inside the 5.56 magazine. A cartridge load for 16-inch barrels with slightly less gunpowder to keep the velocity under the speed of sound when fired out of longer-barreled rifles. 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. by jFlacoS Sun Dec 29, 2013 12:50 pm, Post At 500 yards, the bullet has dropped almost 9 feet, making it more or less impossible to hit your target. 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. If youve spent any time poking around online, youve likely heard its . 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). TS Customs Quick Adjust Knob for KMW Loggerhead Cheekpiece, Modular Driven Technologies (MDT) HS3 Chassis Review: Part 2 Shooting the MDT HS3 Chassis System, Rifleshooter.coms 50-25-7 Practical Carbine Standard, Shortening a shotgun stock and fitting a recoil pad, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver. To correct this and ensure all of their ammo has more or less the same muzzle velocity out of all barrel lengths, Discreet Ballistics offers two loads for this ammo: The bottom line is the Discreet Ballistics 188-grain Subsonic Selous Machined Expander is one of the single best subsonic hunting cartridges you can buy. 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. Hornady is known for being more or less the top dog of quality ammunition. Momentum! . It works well with supersonic ammo. (At my location the speed of sound was about 1,143 fps on the test date.) Even after handloading, I still believe subsonic shooting is the forte of the .300 AAC Blackoutjust as J.D. For example, a 55-grain 5.56 bullet bullet traveling just under the speed of sound1,050 fpsonly has 135 ft.lbf. 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. . 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. This showcases the dual purpose of the round. I know Noveske makes good products, but maybe you got an out-of-spec barrel. You must log in or register to reply here. Others states like Maryland, Hawaii, and Nebraska require you to use ammo that produces a certain amount of muzzle energy regardless of the caliber. Years later, I headed out the range with a custom Remington Model 7 chambered in 300 BLK. 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 A cartridge load for 7 to 11-inch barrels with slightly more gunpowder to increase the velocity out of short-barreled rifles. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. There are two things you can do to increase a bullets energy on target: In general, the best way to increase the muzzle energy of a bullet is to fire it through a longer barrel. Should I take out 2 weights or clip his spring a couple coils? Buy Guns Now to Avoid the Run. lighter buffer? 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. 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. After speaking with Nosler, I think we found the cause. When combined with a suppressor, 300 Blackout ammo can give you one of the most powerful, nearly silent rifles you can have. 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. +1 on trying a standard carbine buffer. So I recently built a 300 blk out upper and took it out to the range over the weekend and had cycling issues. Let's consider the Blackout with 150-grain bullets at 2,100 fps. In this article, youre going to learn . 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. If a 300 Blackout upper will not work on a standard milspec lower then the problem is with the upper, not the lower. It can be used in AR-15s with minimal modification. All in all, its probably a better cartridge for killing deer than 5.56, so not only is it legal its also preferable. Theres one key difference between hunting ammo and home defense ammo. With. One caliber is one hundredth of an inch, and calibers are written as decimals of 1 inch, like .30-caliber. I recommend first to try slower powder, I had the exact same problems with mine. 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. 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. After a hard weekend at the range running some difficult drills with an 18 pound 300 []. 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. lighter spring? The two primary kinds of ballistics you need to worry about are external ballistics and terminal ballistics: So, with this model in mind, lets look at the 300 Blackouts external and terminal ballistics. First time shooting the gun, loaded up a 30 round magazine and I fire the first shot with no issues. Other factory ammo and reloads with CCI 400's were 100%. 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. 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. by 20X11 Sun Dec 29, 2013 11:19 am, Post 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. If it's ejecting okay where does the spent brass land? Click the Go To Forum Thread link below to jump in and discuss this article and much more! 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. . I will try some other loads and see if I can keep sub and still cycle. It may not display this or other websites correctly. No one doubts the deer-killing performance of the 30-30, and the 300 Blackout can match or exceed that. 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. Sorry, an error occurred and we could not sign you up. 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. The latest content straight to your inbox plus an automatic entry to each of our monthly giveaways! 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. To get down to the nitty gritty; live rounds are "being left" in the chamber. The 300 BLK has such a small case you are effectively loading pistol powder into a rifle cartridge. When was the last time you saw 30-30 ammo offered with anything but 150-, 160-, or 170-grain bullets? Some would even say the 300 Blackout is too good at penetrating obstacles. He wants to be able to run subs while he waits on his can. In my experience the 300 Blackout runs best with a pistol length gas system. With some loadsparticularly those using the 125-grain Nosler. Anything more expensive is probably more than you need if youre just tearing up targets and having fun. These cartridges are almost identical in design and price, but the hollow points also double as effective hunting cartridges for animals under 50 pounds. I took out the carrier bolt assembly, and re-oil it and still the same problem. 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. 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. All else being equal, you want your bullet to retain as much energy as possible by the time it hits your target. The further a bullet has to travel after being fired, the more time there is for drag to slow it down. 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. 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. 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. While the bullet is obviously much larger, the parent case is 5.56mm so it will fit into the chamber. And others say any halfway decent hollow point will do. . All AR-15 uppers are standardized to work with AR-15 lowers, so you know that the two parts will always match, too. by jFlacoS Sun Dec 29, 2013 9:59 am, Post Both supersonic 300 Blackout and 223 loads run at the same operating pressures as well. 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. Many states dont allow hunting deer or any other large game with 5.56 or other similar bullets like .223 Remington, although the details are confusing. It fires a .30-caliber, 110 to 220-grain bullet and reliably works with and without a suppressor. Most barrel makers and benchrest shooters will tell you the best accuracy for a given bullet is obtained with a twist rate that just stabilizes the bullet. However, you'll only have to do it once. Lining up and Picking Sides - A WW3 Story. Post The 300 in 300 Blackout stands for .30-caliber, which is a measure of the diameter of the barrel a bullet is designed to be fired through. The cartridge, primarily intended for hunting, offers a greater case capacity and comes with a 1:12 twist (so you cant stabilize the heavies). Each load was fired into blocks of 10-percent ordnance gelatin positioned 15 feet from the muzzle. Instead of being made of solid lead and copper, like most bullets, frangible bullets are made of a mixture of compressed metal powders. 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. Hornady 300 Blackout 125-grain Full Metal Jacket Frontier (Supersonic), Hornady 300 Blackout 125-grain Hollow Point American Gunner (Supersonic), Hornady 300 Blackout 208-grain A-MAX Hornady BLACK (Subsonic). Editors Note: Please be sure to check out The Armory Life Forum, where you can comment about our daily articles, as well as just talk guns and gear. . 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. Summary: When it comes to rifles with barrels less than 16-inches long, though, the 300 Blackout is more lethal than 5.56. You can legally own one gun on paper, but have the ability to fire many different cartridges through it, because the lower is the only part of the gun thats regulated or tracked by the government. The only downside of these cartridges is the cost$1.8 per roundwhich makes it expensive to practice with this ammo. Would you mind doing me a favor? Due to the bullets light weight, its able to reach a muzzle velocity of 2,800 fpsalmost as fast as a 5.56 and much faster than standard 300 Blackout ammo. 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. You can easily adjust for the 8 inches of drop at 200 yards by aiming slightly above the target. CONS: A little short in the stock and I'm no fan of super soft recoil pads. He's also a writer for the NRA Shooting Sports USA, TheFirearmBlog, Sierra Bullets, All Outdoor, OutdoorHub, and Boyds Gunstocks. The cartridge simply cannot push them fast enough to ensure expansion. Some say you want to use the fastest, flattest-shooting bullets you can find. The bullets also behaved very differently after entering the wood. (Have any suggestions for ammo that should be on this list? It cycles fine with supersonic ammo. 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. PROS: Straightforward design; 7" barrel twist; Great compact rifle handling character. AAC took the .300 Whisper, made slight modifications to the case and bullet to improve reliability, accuracy, and performance, and birthed the 300 Blackout (theres more to this story, but thats the long and short of it). Is the 300 Blackout just a new knickknack for tearing up targets at the range, or is it the better mousetrap weve been promised? 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. The VLD Hunting bullet is designed to expand, but not at subsonic velocities. It's usually the shorties - under 10" - that need the can to cycle with subs. Are you running a can with your subsonic and are the subs factory or handloads? 223 Ackley Improved (223AI) loads and review: A better 223? 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. My problem is that once you drop the bullet weight to gain enough powder to make the 300 Blackout supersonic/high-velocity so that it will actually cycle in your average AR-15, you gain nothing over the .223 round. . 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. and 5.56 NATO loads. 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. Youll often hear people say that the ideal barrel for shooting 300 Blackout is 8 or 9 inches. But what does this mean for boar and deer killing performance? I dont want to knock the 30-30 here, but its also true that the Blackout is more versatile than the 30-30. Its hard to find a cartridge that does this better than the Discreet Ballistics Selous Machined Expander you just learned about. 300 blackout optimized with pistol length gas systems. "Not cycle" can mean several things - does it extract and eject the fired round but not feed the next round, something else? This unique cartridge, not surprisingly, has a varied grain weight range. Next, I tested terminal performance by firing each load into blocks of 10-percent ordnance gelatin. More bullet energy on target = more potential killing power. The first thing you need to know about 300 Blackout external ballistics, is that this cartridge wasnt designed to shoot over long ranges. 7.62x39mm is a respectable cartridge and so is .300 Blackout when it is loaded to supersonic velocity. As this bullet penetrates into someone the aluminum nose of the bullet is pushed back into the copper base. If a 50-grain bullet from the Fireball can do in a hog of this size, the 300 Blackout should have no problems. Here are the Best .300 blackout rifles (Our Picks) 1. and opinions expressed on this website are those of the authors and do not necessarily reflect the 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. P.S. This is less of a problem with mid-grade 300 Blackout ammo from reputable companies. 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. In this perspective, a rifle loaded with subsonic .300 Blackout may as well be a pistol caliber carbine. I chose two Berger VLD bullets, the first of which was the company's 190-grain Hunting version. This is particularly true at longer ranges, where bullets begin to drop faster and it becomes harder and harder to predict where they will land. You can reliably hit man-sized targets at 300 yards with supersonic 300 Blackout ammo or 150 yards with subsonic 300 Blackout ammo. It would work well for defense and tactical applications; the bullet's bonded construction would help it hold together when encountering a barrier. Jones chambered T/C Contender handguns for these rounds and called them Whispers because he was keeping muzzle velocities below the speed of sound. 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. Posted: 2/5/2017 7:33:39 PM EST [#13] Quote History There's a narrow band of powders that work well with the .300 Blackout. I was shocked. The more energy a bullet imparts to a target, the more damage it causes, and the likely it is to kill someone or destroy something. You must have JavaScript enabled in your browser to use this website. A grain is a unit of measurement used in the firearms industry for measuring bullet weights, equivalent to about 1/15th of a gram. TNVC/NGI Giveaway: 15 winners with over $7000 worth of prizes!! Most people train with cheaper ammo and then occasionally break out their fancy home-defense ammo to familiarize themselves with how it feels when shooting. 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. If you can't buy tires for your car, that's a more significant problem. You can fire all of these cartridges through what looks and feels like more or less the same gun, which means you dont have to get used to shooting and cleaning a new rifle. . In the case of 300 Blackout, you either . . I could see no real advantage offered by the .300 Blackout in supersonic form over the .223 Rem. External ballistics is the study of how a bullet behaves as it flies to the target. One of the benefits of 300 Blackout ammo is that there are umpteen different bullet designs to choose from. All three of the rifles tested in this group had trouble feeding the stubby 300 Blackout cartridges if we just dropped the rounds into the opening of actions generally designed for longer cases. The team at Discreet Ballistics call this bullet their Machined Selous Expander, and they achieved this menacing effect through a few neat feats of engineering: The result is a bullet that reliably expands to over three times the width of the original bullet, creating a wound nearly an inch wide. If you live above ground, though, then every bullet that doesnt stick in your assailant could hit someone who didnt deserve it, and thats not cool. 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. So, the final word on the 300 Blackout is that if you want to use a suppressor and subsonic ammo to fire the most powerful quiet bullet possible . The 7.62 Soviet's cartridge taper prevented reliable feeding in AR magazines and created wear on the bolt. It is a shame, it never caught on as much as it should have. For all intents and purposes, a good maximum range for supersonic 300 Blackout ammo is probably around 300 yards. When seconds count and the police are minutes away. Later, I wondered if it was possible to do something with supersonic handloads that would change the game. Apparently not. This was the case with the Nosler Ballistic Tip, which showed almost no expansion through the first 8 inches of penetration. Some bullets require a certain barrel length to reach maximum energy, and using shorter barrels makes them far less effective. 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. Where are you located and maybe somebody local can take a look at your gun. Jones of SSK Industries in the 1990s as part of his Whisper series of cartridges based on the 221 Fireball. By utilizing a fast twist to stabilize the long heavy subsonic bullets, I suspect accuracy suffers on the lighter loads. Accuracy was not. That might seem like a lot, but remember this is specialized hunting ammo. I have used multiple mags with no success. if you use bullets that are designed to expand while moving at subsonic speeds. All Rights Reserved. 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 same properties that make 5.56 bullets fragment inside people also make it break apart when it hits wood or metal. 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. It may not be a high probability, but the point isnt that you must be able to penetrate armor.
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