And now for the killer..I dumped ALL my 5.56 stuff, all of it including the progressive press set up just for it, and went full in on 300 BLK. We will promptly replace or repair any product that we determine to be defective. Please tell us more about how awesome it is. Wildcattersgun owners who fabricate and reload cartridges of their own designexperimented for years with a .30-caliber AR-15-friendly version. I then hit it 15 times in a row. Did you ever wonder why PSA always has 5 star reviews on their website Such large projectiles convey a subsonic muzzle velocity that is accompanied by a quiet report. The muzzle velocity used for 5.56 in the chart is with a 16 barrel, but the 300 BLK is using a 10 barrel. At 16 inches, .300 Blackout barrel muzzle velocity is close to its peak, giving you a powerful weapon for making accurate long-range shots. Pretty much the only reason for a 16 300BLK is if you dont ever plan on running a suppressor and dont want to register as an SBR. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. Results are in inches/foot-pounds of energy and based on a 100-yard zero with the scope 1.5 inches above the bore. WebSince we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. JMO on this, 300BLK is VERY MUCH a reloaders round. Have been shooting 300 for a few years now. Dennis- 300 BLK starts with a 5.56 casing that they neck down much shorter, allowing for a wider and longer bullet that can now weigh significantly more than any 5.56 can. 300 Blackout Barrels Its a few hundred FPS from my 16 AR9. There is obvious powder burn outside the barrel which is clearly visible on video. Compare that to the Omega at 120db and you have a HUGE audible difference. You have entered an incorrect email address! The 300 AAC Blackout delivers ballistic performance comparable to 7.6239, yet possesses a base diameter that optimizes functionality in an AR-type platform. Advanced Armament Corporation began developing a .30 caliber subsonic cartridge optimized for the M4 platform in 2009. A 125 gram .300 BLK bullet fired from a 16-inch barrel has an effective range of about 500 yards , while the same ammo shot from a 9-inch barrel has an effective range of about 480 yards. Getting away with it because they had deeper pockets (costs a lot to get SAAMI cert) and Remington Defense backing. WebAt 200 yd (183 m), the 300 BLK drops 2 in (51 mm) lower than the 6.8 SPC, while it drops 30 in (760 mm) lower at 500 yd (457 m). Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. Having a longer barrel also provides more time and surface for the bullet to stabilize from the point of firing to the point where it exits the muzzle. For the best experience on our site, be sure to turn on Javascript in your browser. I dismiss this entire article as slow news day page filler. My purpose is close quarter confined space self defense, not hanging out a helicopter shooting wild boar, although that sounds like a helluva lot of fun. anyone have a good reliable source for ballistics of the most commonly commercially available and popular 300 blackout roundish relation to barrel length and rifling? The latter has nearly twice the propellant, and is therefore better able to fell very distant game. The 300 AAC Blackout was created by Advanced Armament Corp. and Remington primarily for the military as a way to shoot .30-caliber bullets from the M4/AR15 platform while using standard magazines. For instance, having a relatively long barrel has the gases from the already burned-out gunpowder trapped for longer, which means there will be more push time of the bullet by the gases. WebThe 300-Blackout is a lower-power 30-caliber cartridge. Accuracy differences would be more apparent in supersonic loads where the transition from supersonic to sonic happens before the target. Hornadys American-Made Ammo Cabinets Keep Your Gun Food Secure. For an MG with a sub 16 barrel and a suppressor, you only need two stamps, one for the suppressor and one for the MG. Two. Affordable Factory 300 BLK Ammo is Available. 21.5Gr shows pressure signs. Longer barrels also screw up the timing, 16 with carbine gas is on the outside fringe of reliable for the 300. The distinction means the round can fit into an AR magazine, an AR upper built for the .300 Blackout, and an AR lower. Adding more barrel length after that point might still increase the velocity a bit, but the added weight isnt always worth the extra dollop of velocity. Subsonic .300 Blackout rounds fix this problem by traveling slower than the speed of sound. Nobody shows pics like mine because it was not big dealnothing to talk about. Saying things like at 10, the muzzle velocity hasnt yet reached its peak is misleading when youve got a cartridge with a wide swing of bullet weights and charge weights. (AAC) or have you seen / heard of any better? PWS is as close as you can get right now. And if you are out in the wild shooting at some long-range game, a longer barrel will give you both the power and accuracy advantage. But what really makes me love it is the wide variety of calibers it can be used on. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. Having internal ballistic software to play with is an eye-opener in a lot of ways for example Ill never have a .308 longer than a 20 in. Its not going to be long until you want to suppress it and/or SBR it. Nicole Krenze, *Competitive Shooter of the Week* To add Im also a lefty so want to manage the gas as much as can be done. Don't believe in them, and never will. 2. For instance, longer barrels generate more bullet velocity. By design, the 300BLK just doesnt give up that much velocity until you get down below 9-10 of barrel using factory ammo. And it is VERY quiet AND compact. Even better, the .300 Blackout barrel comes in various lengths, allowing you to pick a length that best fits your needs. I have a Sig red dot on my 556 upper and a 4-1240 Bushnell scope on my 300. Even though the .300 AAC Blackout's design implementation was based on the shell casing of the .556, the latter cannot be shot from the barrel of a .300 Blackout. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. And anything over 75 grain was better with a 1:9 twist. Nothing further than that is as effective since the gunpowder burning would be inefficient in the spare room. Basically, machine guns get exempt from the stamp for a shorter barrel. agreed on this. My test gun is a Remington 700 with 16 5R barrel. This is actually much tighter twist required to stabilize the short 124gn. but horrible reviews on Trustpilot? However, if you want a .300 Blackout barrel that can deliver sufficient power, accuracy, and maneuverability to serve you in various scenarios, go for a 9 to 10-inch barrel. With a warm barrel/suppressor unit, it is possible to shoot impressive groups. For example, the Hornady Sub-X 190-grain load shot from a 10-inch barrel flies at 1,050 fps and drops 47.6 feet at 200 yards. Even the .357 magnum picks up considerable velocity when shot from a 16 or 18 carbine. Any time you put a can on a rifle, an adjustable gas block will allow you to tune it. Buy a .308 from a legit company and save yourself headaches. All you need is a bigger diameter barrel. Whats the magic number for .300 BLK barrel length? The 16-inch barrel also provides greater energy on impact, regardless of ammo type. Having a longer or shorter barrel is a matter of understanding the dynamics of ammunition, barrel design, and overall shooting conditions before you settle on a preference. The last thing you ever want is a loosening silencer while shooting rapid fire or full auto. Barrel twist rate also impacts performance and should be considered when selecting barrel length and determining the effective range of the 300 Blackout. 300BLK vs. 5.56? The deer Ive taken with my 8 300 BO dont know or care. The development of the .300 Blackout was a joint effort between AAC and Remington Defense, and this was to produce a replacement for the 5.56 NATO. For the best experience on our site, be sure to turn on Javascript in your browser. AAC .300 BLK AR-15, The Gun Blog. _gaq.push(['_setDomainName', '.accurateshooter.com']); A second stamp for the suppressor, a separate serialized firearm.. The point is, based on the design parameters of the 300BLK round while you do get more velocity from a longer barrel the % increased velocity per inch increase in barrel isnt as much as with say a 5.56. Dennis, running 7.6239 in an AR has a whole bunch of issues on its own. 4 models Rainier Arms AR Ultramatch MOD2 300BLK Barrel $400.00 Final Sale. All these benefits work together to make a 16-inch .300 BLK barrel the best choice for hunting and other forms of long-range shooting. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. Lets explore all this caliber has to offer including an in-depth look at 300 Blackout Ballistics. Now its a chicken and egg thing. Save my name, email, and website in this browser for the next time I comment. This will make sighting to that farther distance simpler. At a mere 200 yards with a 100 zero, the 300 Blackout drops nearly 5.5 inches more than the 5.56, at 300 yards it drops a whopping 19-inches more. 300 Blackout SAAMI Cartridge Specification. Though the muzzle rise and recoil forces are not entirely negligible, they are not enough to affect follow-up shots for the shooter. Whether you decide to go long or short on your barrel is entirely a matter of what you are shooting at and where the shooting is taking place. Your muzzle choice should also be in consideration of the flash produced and the muzzle rise with every shot. At 10-inches, muzzle velocity hasnt reached its peak. From there it really degrades. For those with suppressors, the 1:7 twist favors the heavier subsonic rounds. Kirsten Provides Some Answers, Horner Wins Tactical-Optics Divison At Multigun Nationals, 300 AAC Blackout Load Data from Sierra Bullets, Scary Stuff .300 Blackout Fired in a .223 Rem Barrel, .300 Blackout Fired in .223 Rem AR Recipe for Disaster. How is the recoil of the 6.8 vs 300 Blackout? anyone have a good reliable source for ballistics of the most commonly commercially available and popular 300 blackout roundish relation to barrel length and rifling? Play around with powders too much handloading and you screw up the timing on the gas system. If you want the longest range with a suppressed .300 Blackout barrel, get a 16-inch barrel and add a suppressor. It could, if youre hand loading. Really -- the largest difference is barrel length. It didnt take long for engineers at two of the industrys finest to solve the problem, though. As a testament to the efficiency of the .300 AAC Blackout, several military units across the world, including the Netherlands, United Kingdom, and the United States, have adopted it. They instead heavily based their new cartridge on SSK Industries 300 Whisper. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. They term best is entirely subjective and influenced by intended purpose and individual needs. The military roots still show in the selection subsonic loads, although its neighborly friendly to ditch that familiar crack as the bullet breaks the sound barrierwhether its quieted at the muzzle by a suppressor, or not. 300 BLK was a way to achieve similar ballistics as the .308- with the least modifications to your 5.56. ALL RIGHTS RESERVED. AAC didnt develop a damned thing. But there you have it. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. SOCOM 7.62 Mini suppressor. A 16-inch barrel will provide more velocity to compensate for the weight of the bullet, allowing it to travel further on a flat trajectory. At 16 inches, muzzle velocities are near their maximum. Remington now sells a variety of 300 BLK ammo: 1) 125 grain open-tip match with a custom Sierra bullet; 2) 220gr subsonic, and 3) 125gr AccuTip (photo below). Once all of the powder in the case has been burned, theres no more fuel to add to the combustion and the gasses are at their maximum energy. This means that one gun can serve as two just by switching the uppers. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. 300 Blackout Guide: Best Barrel Length, Build 9 AAC 1:7 melonite barrel is the best Ive tested. I screwed my walking dead, LEGAL, form 1 Maglite silencer on it. Heavy, slow moving subsonic bullets experience more bullet drop than fast, more aerodynamic bullets. Attaching a 6 suppressor to this barrel length results in a total length of 14 to 16, which provides optimal muzzle velocity for accurate long-range shots. ps.the arm brace apparently was deemed legal by ATF for incidental resting on your shoulder. Advanced Armament Corporation (AAC) started working on the cartridge in 2009 after a U.S. military organization requested the development of a .30-caliber round capable of running in an M4. Thats 8 inches of barrel for the 300 BLK 1-8. From there it really degrades. The .44 Mag is well known for picking up considerable velocity from a carbine. Versions include FMJ, with or without boattails, open tip match or open tip flat base and cartridges with Hornadys SST V-Max, Sub-X or hollow points. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. For those looking for a rifle can and not worrying about rimfire or pistol calibers, the SilencerCo Harvester is perfect. Cartridge Overall Length: 2.02 inches. 300 Blackout SAAMI Cartridge Specification. However, this maximum effective length is determined by the barrel's length, and the 460-meter distance is achieved by a nine-inch barrel. I wonder, though, whether people ascribe greater accuracy to a longer barrel, thinking longer barrel = straighter trajectory, when really its that longer barrel = greater velocity, which in turn implies less susceptibility to random wind movements? Suppressor-Friendly: You can shoot heavier bullets subsonic. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. Any 2015 announcement would probably not hit shelves until 2017 and then figure the ATF wait and you are probably going to need to wait until 2018 to get your suppressor. Using a short-barreled rifle is ideal for home defense as its compactness makes it easier to maneuver throughout the home. This issue isnt unique to 300 Blackout bullets, though. John McClain, *Competitive Shooter of the Week* said. Mike: I cant seem to edit my comment. Maybe not so much that the longer barrel is directly responsible for greater accuracy, but indirectly? That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. In a 16 supersonic only AR there are vastly superior caliber choices like 6.8SPC. However, a 20+ inches barrel may be too unwieldy and impractical for anything but target shooting. We stand behind all our products and were here to support you. Selecting the best barrel length for the .300 BLK can be a double-edged sword. And it also serves as a specialized 30-Cal rule-beater that lets 3-Gun competitors make major with a low-recoil cartridge that also offers long barrel life. Just more satisfying to me than a real press. Bullets make a similar noise, although not nearly as earth rumbling, that is very recognizable and isnt always advantageous in combat. The well-known terminal performance of that Sub-X bullet, however, does make the load an ear-friendly option for some who hunt at relatively short distances. 300 Blackout https://en.wikipedia.org/wiki/.300_Whisper. Remington now sells a variety of 300 BLK ammo: 1) 125 grain open-tip match with a custom Sierra bullet; 2) 220gr subsonic, and 3) 125gr AccuTip (photo below). Armed forces in the U.K., U.S., and other countries use .300 Blackout because its stopping power and suitability for close combat are undeniable. 300BLK supers wont touch the 6.8SPC in a carbine length or longer barrel, and if you dont plan to suppress or run an SBR is just a way better choice. Eventually, they got their own 300 Blackout cartridge SAAMI approved in 2011. A bullet also travels less horizontal distances from wind when it is faster. In instances where that is not an option, however, you can always go long or brace yourself for those loud blasts with every shot. According to Advanced Armament Corp the entity that developed the .300 Blackout cartridge its optimized for a 10 barrel with suppressor. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. A longer barrel has a slower twist rate and provides more power and accuracy, which is better for long-range targets. A higher velocity will help a bullet fly with more power and speed, increasing how far a bullet can travel before gravity pulls it off its trajectory. This type of software isnt free, but as a one-time purchase its probably the best reloading tool you can get for the price and pays for itself quickly given the price of reloading components youll save. These rounds can work well in taking out deer at distances of up to 300 meters, depending on who is handling the rifle and the shooting conditions they're in. In matters of velocity comparison, different barrel lengths for the .300 Blackout sit within the 25-50 feet per second per barrel velocity rule that governs most firearms. Shorter barrels do not result in less accuracy. Heck, my Walmart still sells .308 after the evil 5.56 and handgun ammo purge. Much better QD system than AAC, and with the replaceable mounts, you can even go direct thread if you want. WebAt 200 yd (183 m), the 300 BLK drops 2 in (51 mm) lower than the 6.8 SPC, while it drops 30 in (760 mm) lower at 500 yd (457 m). Our initial research data covered the relationship between barrel length and velocity for some 13 common handgun calibers/cartridges. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. The ideal barrel length when hunting with .300 BLK is one able to reach long-range targets with sufficient bullet velocity and energy on target for a lethal impact. For Pete this isnt ideal, but for the average person this would be a good option. I dont think you can get there in 9 inches with full-size powder loads regardless of how fast-burning they are. He never got it to run right and put too much money into it. Drop is predictable; wobble is not. WebSince we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. 3. Except if it some of those overbuilt pistol cans that are rated for subsonic rifle ammo. Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. The article is filled with generic statements we all knew in 2009, and some incorrect statements that conflict with the dozens of articles TTAG has posted in the past on 300BLK; look uo Leghorns articles on 300BLK for good data. Those rounds like a slower twist, something closer to 1:10, but no one seems interested in making a barrel for that. 1:8 or increasingly, 1:7, especially if you want to stabilize subsonic, LONG bullets at low temperatures. I would look into making/getting a telescopic suppressor (reflex design). If you already have a favorite .300 Blackout barrel length and are in the market to buy one, check out our selection of premium .300 Blackout barrels. Cartridge Overall Length: 2.02 inches. Greater velocity, if the longer barrel enables such, leads to a farther maximum point blank range. I do anticipate hunting deer / pig with this build supersonic of course. In large part because of PSAKs being very dangerous garbage until very recently. Dont forget that longer barrel = greater sight distance for iron sights. Jones design of .300 Whisper, gave it an ever so minor redesign, renamed it, and submitted it to SAAMI for certification. ALL RIGHTS RESERVED. A 9" barrel will allow any 300 BLK cartridge to reach optimal velocity, while an 11.5" barrel will provide a bit more accuracy and stability if you plan on shooting mostly supersonic loads. Compared to other bullets, a .300 Blackout is a 30-caliber bullet in a .223/5.56mm shell casing. On the flip side SIG SAUER seems to think that 6 inches is perfect for them (their new MCX uses a 6-inch barrel). TKS! It has a very short barrel and runs a long 9 can. creates and publishes industry standards for safety, interchangeability, reliability and quality, as well as coordinates technical data for agencies, enthusiasts and manufacturers. For .22LR, for instance, the optimum length is 16. And since you can't stuff more gunpowder into your ammo, it's essential to ensure you do not go too extreme on the barrel length. Affordable Factory 300 BLK Ammo is Available. (That was a mistake Ill rectify next barrel probably.). Despite its compact size, a .300 BLK round fired from a short barrel can still hit targets up to 100 yards away. Dumb question- How many stamps would an M16 with a short barrel and a suppressor require? That did more to spark interest in NFA items than anything. By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. The AAC uses a similar weight and dimensional bullet as a 30BR and 20 inch barrels and longer are the standard for those highly accurate bolt guns. Standardized with SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) specs means every design aspect of the .300 Blackout is kept similar, regardless of the manufacturer. Barrel Length Higher velocity results in less drop at longer ranges, which of course effects point of impact. 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. Mission accomplished. Supersonic ammo retains rifle caliber velocities, has increased effective distance, and bullet drop is greatly reduced. At 16-inches, muzzle velocities are near their peak. For long-range targets, barrel lengths of up to 16 inches are available. Yes, there are loads that can use longer barrels, but you need to have a specific goal in mind before there is a large benefit in this caliber. Pistol calibers often reach near optimum velocity at about 8-10; longer lengths may increase velocity, but only by slight amounts. if you do want to talk, you can come to me. A 125 gram .300 BLK bullet fired from a 16-inch barrel has an effective range of about 500 yards , while the same ammo shot from a 9-inch barrel has an effective range of about 480 yards. 300 blackout 300BLK vs. 7.62x39? BBTI - Ballistics by the Inch :: Home There are a few factors to consider when selecting the ideal barrel length for a 300 BLK rifle and determining its effective range. With supersonic rounds for maximum muzzle velocity to subsonic loads that quiet the roar by slowing the pace. In a 16-inch barrel, .300 Blackout ammunition gets impressive velocity and accuracy, allowing you to hit targets over 150 yards away. I also note that this info is hard to find anywhere else, boiled down to what works, for the average guy based on a lot of industry insider info- and trying different things, and that is all you, Nick, and TTAG. Compared to other ammunition like the 350 Legend, the .300 AAC Blackout is more effective in taking long-range shots. The 300 Blackout would never see mainstream military use, although it became popular in the civilian shooter market. Ive not shot it w/o the can. Lantac or Gemtech BCG (want to ensure proper cycle) Definitive Guide to 300 Blackout Ive been bitten by both. If the .300 BLK is good enough for the U.K. and U.S. military, its more than enough for home defense. So heavy a bullet conveys a subsonic muzzle velocity and correspondingly softer report. In the chart, Hornady 110gr G-Max Full Boar (2,350 FPS At Muzzle), Hornady 125gr HP American Gunner (2,175 FPS At Muzzle), Hornady 190gr Sub-X Subsonic (1,050 FPS At Muzzle), *Competitive Shooter of the Week* And adding a foot-long can to a full-length rifle is not optimal, particularly when you can push a 220 grain bullet to just under the speed of sound in six inches or so. So you can ball on a budget and just buy the barrel and make the swap when needed-or buy just brand new upper already setup for 300 BLK and throw it on your existing lower. 300 Blackout 1-7 vs WebThe 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. Accuracy is hard to figure.I have a real 25 yd range and with the red dot thing on it it stuffs all loads into a ragged hole but the point of impact does vary between them. Really -- the largest difference is barrel length. ), while others may be better in 8 or 10 barrels. A whole new world of hunting and target-shooting options open with that difference, a fact sometimes obscured by the cartridges subsonic and military roots. Hunting Capability: 300 BLK conforms to state hunting regulations which may require a cartridge larger than .22 caliber. I have a 762-SDN-6 suppressor on a 300 BLK rifle I built with a 16 barrel shooting subsonic 220gr ammo but I dont get the tick, tick, tick when shooting.
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