The .300 Blackout also comes in a supersonic variant, which means once fired, the bullet travels faster than the sound barrier. Cartridge Overall Length: 2.02 inches. Based on these figures, if you plan on shooting targets within 100 yards, you can make do with a 10 to 12-inch barrel. And cheaper to boot. Developed in 2009 by the Advanced Armament Corporation or AAC, the .300 Blackout is regarded as a round that gives top-class performance when compared to similar calibers. Lack of wind drift alone is a decided advantage, along with a flatter trajectory. We will promptly replace or repair any product that we determine to be defective. Let your fellow shooters know share this article using the Facebook, Twitter and other social media icons below. Compared with the muzzle energy of the .556, the .300 Blackout has the same muzzle energy that the .556 has at 500 meters while it is at 700 meters. The 9 300 blackout barrel is the best overall barrel length with or without a suppressor, especially since an 8 barrel is the minimum warranty barrel length for many suppressor manufacturers. A big boom, and a really big flash, sounds like fun, when fun is the goal, anyway. and ask bribes of companies to remove bad reviews. I was under the impression that accuracy needed to match bullet weight, (already mentioned), barrel length (also mentioned), and type of powder used. Every scrap of experience I have, and every bit of advice Ive ever been given (withthe exception of the black magic that is barrel harmonics), points to the conclusion that barrel length and accuracy have nothing whatsoever to do with each other. The 16-inch barrel also provides greater energy on impact, regardless of ammo type. 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. Good follow up to your other posts on 300 black. Its really hard to find data on accuracy down-range with different lengths and types (prob just go with AAC as they seem well respected, but would really like to find the most accurate nitrided barrel made). For 300 AAC Blackout, that point is 9 inches of barrel. With supersonic rounds for maximum muzzle velocity to subsonic loads that quiet the roar by slowing the pace. QA/QD systems may add more tolerance stacking and complexity, but the silencer is snug and firm. The only thing that barrel length gets you is velocity the longer the bullet is in the barrel and being pushed by the expanding gasses of burning gunpowder, the faster that projectile will be going. As the .30-Cal cartridge of choice for the AR15 platform, the 300 AAC Blackout, also known as 300 BLK, has become quite popular with black rifle owners. But all things considered, the .300 Blackout will surely deliver whenever it's put to the task. ALL RIGHTS RESERVED. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. 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. BA, Rosco, WC, and others have all worked immediately without any specialty tuning. They had a 1.5 star rating 3 years ago. Besides being powerful and efficient, .300 Blackout rounds are ideal for home defense because they are lethal when fired from short-barreled guns. 300 Blackout Guide: Best Barrel Length, Build ga.src = ('https:' == document.location.protocol ? The speed of sound is 1,275 feet per second (fps) at sea level and varies slightly with temperature and atmospheric pressure. But what really makes me love it is the wide variety of calibers it can be used on. Longer barrels also screw up the timing, 16 with carbine gas is on the outside fringe of reliable for the 300. The catch is on a semi auto you may wind up with weirdness around pressure curves. Thats water weight capacity. One of those AI chatbots thats been in the news recently? For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. For 5.56 NATO, that point is 20 of barrel. This will make sighting to that farther distance simpler. 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. 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. Daniel Squ, Brass-cased ammo generally outpaces steel in every, *Competitive Shooter of the Week* 300 Blackout Definitive Guide to 300 Blackout 300 Blackout When you pair the barrel with .300 Blackout ammo, you get an easy-to-carry gun that spits rounds capable of penetrating heavy barriers. I get a lot of questions like this and figured that rather than responding to one specific email I should put it out there for other people as well. A fast attach lets me do that. Affordable Factory 300 BLK Ammo is Available. But shortening the guns usually has resulted in less accuracy. if you do want to talk, you can come to me. This guide takes a closer look at the various barrel lengths for the 300 Blackout round and where to find them. However, a 20+ inches barrel may be too unwieldy and impractical for anything but target shooting. http://thetruthaboutguns.com/author/foghorn/, Illinois Freedom Week Starts Today: Federal Court Blocks Enforcement of Illinois Assault Weapons Ban. 300 Blackout , in bullet weights that vary from 110- to 220-grains. Why would you detach your suppressor for supersonic ammo? They straight stole J.D. Longer barrels tend to be less rigid, so people go for bull barrels, but those get heavy so people go for fluted barrels. A longer barrel, because of its increased surface area, provides more room for cooling in instances where you shoot continuously. Subsonic 220Gr loading is 9.6Gr IMR 4227 and that is a near capacity load Id guess there is room for 11Gr. (That was a mistake Ill rectify next barrel probably.). 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. On the flip side, having a shorter barrel allows for easier close-combat shooting, which would otherwise be a challenge if you had a nine-inch barrel. WebIn 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. My test gun is a Remington 700 with 16 5R barrel. Ive not shot it w/o the can. 300 AAC Blackout Keep reading to discover the best barrel length for .300 Blackout for different shooting scenarios. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. Barrel twist rate matters as well, its another factor to consider when choosing barrel length and determining 300 Blackout effective range with your rifle. Handloading the .300 AAC Blackout A 9 to 10-inch .300 Blackout barrel keeps a gun portable and short enough to wield easily. For 300 AAC Blackout, that point is 9 inches of barrel. The Harvester is a great suppressor. Able to suppress all rifle calibers up to and including 300 Winchester Magnum, its perfectly at home on the 300 BLK rifle offering about 40% sound reduction. Now the ammo costs too much for a niche rifle caliber. Great Brass: No Case forming is required just buy Lapua 300 BLK brass. Now its a chicken and egg thing. One for the M16 regardless of barrel length. Nobody shows pics like mine because it was not big dealnothing to talk about. 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. We refer to it as one rotation over a particular inch of barrel. They announced their current suppressor line at the 2013 shot show and we are now just starting to see them trickle into the retail channel. 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. Ask Foghorn: What Barrel Length for Supersonic ammo in a 10-inch barrel retains rifle caliber velocities but experiences greater bullet drop at distances. 300 Blackout Chamber erosion, out of battery detonations in < 2k rounds, most of them. 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. A 1:8 twist works best with the light-weight supersonic rounds. So you recommended the harvester- the same can that BLEW OFF a rifle at TIFF and flew 40 yds into the berm. It will also be fitted with an Omega can. Factory Starline and SIG produced 300 HAMR cases are available, but cases can be made from common and available 5.56/.223 cases. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. Drop is predictable; wobble is not. Suppressor-Friendly: You can shoot heavier bullets subsonic. You can either start with a barrel length, or a baseline load. Let's find out! A longer barrel also offers a long line of sight for you to better aim your rifle even if the rifle is not equipped with sight extensions. . We stand behind all our products and were here to support you. 300 Blackout Barrels Longer barrel lengths offer greater accuracy and velocity, with a maximum length of 16 for the 300 BLK. It gives an almost negligible muzzle rise while shooting, meaning most of the energy produced during recoil comes back to the shooter's shoulders. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Longer barrels are not automatically more accurate. 300 Blackout 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). At 300, holdover is only 23.4 inches. AAC .300 BLK AR-15, The Gun Blog. Visit us today to browse the .300 Blackout barrel lengths we have in stock and place an order to receive your selection at your doorstep. I like loading 300blk with a hand press for some unknown reason..I developed an affinity for the hand press when I was loading for my 460 XVR. Though its a common report that subsonic ammo isnt remarkably accurate for most users, Ive been very pleased with my Remington 700s performance with 208 AMaxs. Just an old farts opinion! SAAMI creates and publishes industry standards for safety, interchangeability, reliability and quality, as well as coordinates technical data for agencies, enthusiasts and manufacturers. 300BLK vs. 7.62x39? There were also efforts to introduce the AK-friendly 7.6239 mm (also .30-caliber) to modern sporting rifles, but many of them ran into the cartridges case geometry challenge, where feeding can become a concern. 4 models Rainier Arms AR Ultramatch MOD2 300BLK Barrel $400.00 Final Sale. Then you can also pick a slightly faster burning powder to get a complete burn in 16 of barrel. I have a Sig red dot on my 556 upper and a 4-1240 Bushnell scope on my 300. https://en.wikipedia.org/wiki/.300_Whisper. And it is VERY quiet AND compact. My guess is your luck will be like mine. This may possibly be true, but I dont see links to formally derived stats to back up this claim. .300BLK may be great in a 9 barrel with some loads (powder, charge weight, primer, bullet, internal case capacity, etc. Mightnt a fast burning powder expand completely enough to be maximized in a 9 barrel, while a slower burning powder would need greater length of barrel to maximize the burn? Would be really nice to be accurate (reliably hit 12x12 target at 200..maybe 250 yards?) Affordable Factory 300 BLK Ammo is Available. There are a few factors to consider when selecting the ideal barrel length for a 300 BLK rifle and determining its effective range. This length ensures complete gunpowder combustion to generate maximum velocity and stabilizes the bullet for a flatter trajectory and improved accuracy. The SDN just doesnt silence 300 Black very well. I need to get the lathe going as well, and I havent had the time or patience to do it. Supersonic ammo retains rifle caliber velocities, has increased effective distance, and bullet drop is greatly reduced. Since the 300 BLK stuffs a larger bullet into a cut down .223 case (which doesnt hold all that much powder to begin with), you have less powder to play with and thus dont need as much barrel. Dumb question- How many stamps would an M16 with a short barrel and a suppressor require? I assume that there is a finite lifespan of the suppressor guts and shooting supersonic ammo at the range kind of defeats part of the suppressor benefit. To counter this, of course, there is always the option of sticking a silencer onto the muzzle. How many ATF officers does it take to count to two stamps? This means that one gun can serve as two just by switching the uppers. This isnt that hard. Out of a cold unit, you will always have a flyer, usually the first shot. Have had a LOT of different ARs including a Colt upper in 7.6239 that I killed my first deer with! The .44 Mag is well known for picking up considerable velocity from a carbine. 300 Blackout Fine-Tuning: Finding the Right Barrel Length for Your Rifle, For optimal performance with a suppressed, Bird Colonel Trashes Tin Eagles With False Testimony in California Assault Weapons Ban Case, Keith Olbermann Calls for Civil War as the Only Way to Stop Mass Shootings, Illinois Freedom Week Starts Today: Federal Court Blocks Enforcement of Illinois Assault Weapons Ban. Would a shorter barrel make it quieter? Mike: I cant seem to edit my comment. Bullet drop is calculable, though, so that should really fall under marksmanship, as opposed to intrinsic accuracy of the rifle? I get a rifle firing sound which seems down range. Compare that to the Omega at 120db and you have a HUGE audible difference. Built for use with suppressors but still maintaining subsonic speeds, the .300 Blackout is designed to penetrate heavy barriers while still maintaining an overall manageable weight profile. Hornadys American-Made Ammo Cabinets Keep Your Gun Food Secure. Your muzzle choice should also be in consideration of the flash produced and the muzzle rise with every shot. It has a very short barrel and runs a long 9 can. This issue isnt unique to 300 Blackout bullets, though. Conversely, its lightweight projectile bleeds energy downrange, the reason Hornady lists it as a target shooting and varmint hunting load. 300 AAC Blackout AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. The SAAMI diagram for the 300 BLK is shown below. Dennis, running 7.6239 in an AR has a whole bunch of issues on its own. For long-range targets, barrel lengths of up to 16 inches are available. Results are in inches/foot-pounds of energy and based on a 100-yard zero with the scope 1.5 inches above the bore. .300 Blackout ammo can be loud, especially when shooting supersonic rounds. According to Advanced Armament Corp the entity that developed the .300 Blackout cartridge its optimized for a 10 barrel with suppressor. A 16-inch barrel is the longest available barrel for the .300 Blackout, and it is quite effective when it comes to long-range targets. A bullet also travels less horizontal distances from wind when it is faster. 1:8 or increasingly, 1:7, especially if you want to stabilize subsonic, LONG bullets at low temperatures. Handloading the .300 AAC Blackout If you start with wanting a suppressed gun, you will eventually get to the 300. Contact our team at 80 Percent Arms to learn more. There is, however, a point of diminishing returns. Much better QD system than AAC, and with the replaceable mounts, you can even go direct thread if you want. Ive been bitten by both. The companies didnt start completely from scratch, though. Consider a cartridge that has enough energy to travel 1000 yds in free air, standard conditions. Secondly (and the reason why my second .30 suppressor is fast attach) is that I have multiple firearms that I take to the range and want to be able to quickly switch between them. Sounds like somebody has way too much cash on his hands. I have a Q Honey Badger Barrel Assembly which is 7 and a Q Trash Panda. will be fine. Either way you go it is cheaper and requires the least modifications-while providing far superior performance and effectiveness over 5.56 in certain scenarios. 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. said. The stability provided by the long barrel will help the bullet fly on a flat trajectory and increase its likelihood of hitting its target. Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. If you didnt before, you can now easily see there are many factors to consider when selecting the best barrel length for your .300 BLK rifle and determine the effective range of the caliber. Its not going to be long until you want to suppress it and/or SBR it. A second stamp for the suppressor, a separate serialized firearm.. It will be NINE inches in length. 300BLK vs. 5.56? 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 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. It is cross-compatible with. 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. As an example my .243 Winchester LR308 based rifle is fine with IMR 7828 speed but Ramshot Magpro is just too violent with the rifle as configured. You may not reproduce original text or photos without advanced permission in writing. WebThe 300-Blackout is a lower-power 30-caliber cartridge. How is the recoil of the 6.8 vs 300 Blackout? Dont forget that longer barrel = greater sight distance for iron sights. As for silencers, either wait for the SIG SAUER cans to come on the market or get yourself an AAC MG-SD. By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. This is why target shooters prefer short fat barrels they distort less under heat and cool faster. 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. We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum. 300 HAM'R In short, 9 inches is perfect for a 300 BLK barrel. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. For longer range engagements with a suppressed 300 Blackout, use a 16 barrel with a suppressor for an average velocity of over 2,630 fps, leading to more effective shots and minimal bullet drop. Let your fellow shooters know share this article using the Facebook, For .22LR, for instance, the optimum length is 16. A faster bullet requires a different twist to stabilize I think, and if the twist is too fast the bullet will sail like a kite instead of soaring, but its true the faster bullet will be flatter trajectory, and flatter can feel like accuracy for most people who dont want to adjust for elevation. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. Wildcattersgun owners who fabricate and reload cartridges of their own designexperimented for years with a .30-caliber AR-15-friendly version. Suppressors minimize the chances of a sniper being located by sound, but they simply reduce audible emissions from their firearms muzzle end, not a projectiles characteristic crack. To avoid it from giving a shooters position, subsonic .300 BLK loads use heavier bullets and adjusted powder chargesoften tailored for a complete burn in a short barrel. I was understanding that my 5.56 with 55 grain bullet needed a twist of 1:7 to be right. Such large projectiles convey a subsonic muzzle velocity that is accompanied by a quiet report. Had a few questions for you if youd be so kind as to give me a bit of advice . Thats 8 inches of barrel for the 300 BLK 1-8. Whats the magic number for .300 BLK barrel length? This is because the latter is thicker and wider, causing more drag as a projectile. 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. I do anticipate hunting deer / pig with this build supersonic of course. Heavy subsonic ammo in a 10-inch barrel may have lower velocities, but allows for the use of a suppressor without damaging your hearing. Yeah, but 9 barrel in a folder housed in a backpack is absolutely useless in .308 or 5.56. For 5.56 NATO, that point is 20 of barrel. That did more to spark interest in NFA items than anything. Lighter, 125gn bullets wont care, but long, slow bullets need FAST spin-rates. BBTI - Ballistics by the Inch :: Home There is obvious powder burn outside the barrel which is clearly visible on video. 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. As always, train with your rifle and make sure you know your intended purpose before you buy. 300 Blackout Guide: Best Barrel Length, Build 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. 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. Ive seen a few other suppressors suffer the same fate, for the same reason. FWIW. 5. So heavy a bullet conveys a subsonic muzzle velocity and correspondingly softer report. 300 Blackout Guide: Best Barrel Length, Build There have been a number of Kabooms recorded from 300 BLK rounds fired in a .223 Rem/5.5645 chamber. It too functions with all loads I have. Save my name, email, and website in this browser for the next time I comment. There is almost NO need to have a barrel longer than 8-9. 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. Lots of reasons for one to get get launched down range, but most have one thing in common, HUMAN ERROR. Long .300 Blackout barrels have a tighter twist rate, which helps maintain a high velocity and accuracy when shooting a heavy bullet. What happened to it will fire from any AR-15 you might have doesnt appear to be the case since now you say a 9 barrel is optimal but which would require an SBR $200 stamp, you may need an adjustable gas block to handle over gassing & shoot subsonic and then theres the ammo is twice the cost what I pay for my 556 rounds.. My interest in building a 300 AAC for hog hunting that I could just slap in my upper is quickly deteriorating, especially since the gun may not even cycle without, additional hardware if you want to what was promised, which is shoot both supersonic and supersonic through a stock 16 barrel. The SAAMI diagram for the 300 BLK is shown below. And of the couple dozen barrels Ive used in builds, only Faxons have given me fits with under-gassing (suspected out of spec gas port). For those who need to run a .30-caliber cartridge from a standard AR15 platform (as opposed to the AR10), the 300 AAC Blackout makes sense. The Sporting Arms and Ammunition Manufacturers Institute (SAAMI) approved and published industry standards and specifications for the .300 BLK on Jan. 17, 2011. On a gun you plan to carry, super heavy barrels are not ideal.
Chris Berman Carshield Salary, How Long Are 911 Calls Kept In Texas, Articles OTHER