Although functionally identical to the 300 Whisper, the 300 AAC Blackout is its own SAAMI standardized cartridge. WARNING: With some bullet options (and setback during chambering) 300 Blackout rounds will go into a .223 chamber and fire. The old 55 grain ammo used the 1:9 twist , the new 63 grain uses the 1:7 twist heavier bullets need more spin to stabilize and the tighter twist actually increase velocity by increasing dwell time. BBTI - Ballistics by the Inch :: Home Besides being powerful and efficient, .300 Blackout rounds are ideal for home defense because they are lethal when fired from short-barreled guns. Suppressor-Friendly: You can shoot heavier bullets subsonic. if you do want to talk, you can come to me. Compared to other ammunition like the 350 Legend, the .300 AAC Blackout is more effective in taking long-range shots. Twitter and other social media icons below. Other 300 BLK Resources The 6.5 Grendel is a lower to mid-power 26 caliber cartridge. In my ignorance, I would say its because I want to reduce wear and tear on the suppressor. Velocities over my 9 AAC barrel are surprisingly mild, about 30-40 FPS for subsonic and about 100 FPS for supersonics. Ive only ever seen youtube videos of it. Drop is predictable; wobble is not. Will the gun be a 'do it all' for long-range or short-range shots? Cartridge Overall Length: 2.02 inches. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; You are incorrect on one critical detail: 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.. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Because the Blackout is wider, yet they tend to have similar weight, the Blackout has a lower Ballistic Coefficient than the 6.5 Grendel. Muzzle Velocity: 2,259 fps. We will promptly replace or repair any product that we determine to be defective. Plus, the long barrel compensates for its rather laborious maneuverability. Hornadys American-Made Ammo Cabinets Keep Your Gun Food Secure. Have an 8.2, 10.5 and a 16.0 inch. It could, if youre hand loading. 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. I recommend the Silencerco Omega FTW. 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. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; The concept of putting a .30-caliber bullet in a shortened 223 case has been done before, but not as an industry-wide standard that anyone can make products for, royalty-free. Cartridge Overall Length: 2.02 inches. A look at 300 Blackout ballistics including velocity, energy and drop data for some of the most popular loads among American shooters. Supersonic bullets travel fast enough to generate sonic booms, and the resulting noise gives even suppressed gunshots a loud "crack.". In any case, you need to start by fixing a variable (target velocity, barrel length, cartridge) and go from there. A lot of variables involved. WebThe 300-Blackout is a lower-power 30-caliber cartridge. ALL RIGHTS RESERVED. Suppressor length is a grey area as it doesnt count as barrel length or open-air (something in-between, depending on internal geometry), but through testing you can predict how a specific suppressor affects your velocity. 300BLK vs. 7.62x39? In short, barrel length arguments or advice are pretty worthless in comparison to having actual mathematical data and testing. What happened to the big appeal of the 300 AAC for the average guy when this round was first released, which was you can put it on any AR-15 upper you have and go shooting?? 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. A fast burning powder might fully burn in those 9 inch of barrel, but even so, the pressure at the end will still be way higher than it is outside the barrel and hence the accelerating force on the bullet will still be more than friction. Thats why we recommend you have a dedicated 300 BLK upper and mark your magazines. Best twist rate for 300 Blackout? Question of the Day: How Do You Spread the Pro-Gun Gospel? For a more economical build experience, getting a full lower build kit will save you some bucks. So would that be what theyre doing to make that so-called dragons breath novelty ammo, just adding a lot of extra powder to burn beyond the muzzle? 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. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. [Email your firearms-related questions to Ask Foghorn via[emailprotected]. Heavy, slow moving subsonic bullets experience more bullet drop than fast, more aerodynamic bullets. It is extremely easy to convert an AR-15 to fire 300 Blackout ammunition, and the rounds ballistic performance is different enough to justify purchasing the barrel necessary to do so. So, dont read to much into the issues. 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. 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. I have a Sig red dot on my 556 upper and a 4-1240 Bushnell scope on my 300. It is cross-compatible with. Three? Plus higher velocity typically requires less hold over. Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. 300 Blackout SAAMI Cartridge Specification. The speed of sound is 1,275 feet per second (fps) at sea level and varies slightly with temperature and atmospheric pressure. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. 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). , in bullet weights that vary from 110- to 220-grains. Not a bad question at all. Web920K views 3 years ago What barrel length is best for 300BLK AR-15s? 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. 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. I need to get the lathe going as well, and I havent had the time or patience to do it. For those looking for a rifle can and not worrying about rimfire or pistol calibers, the SilencerCo Harvester is perfect. Sig does plan for a civilian 300 barrel. Would be really nice to be accurate (reliably hit 12x12 target at 200..maybe 250 yards?) Clickhereto browse previous posts]. Perfect for integral suppressor or just using as an SBR/pistol. Rumor has it that SIG SAUER is coming out with their new line of rifle silencers at SHOT Show next year,and they are currently appear to be quieter and more durable than anythingelse on the market. Its a 30 second swap from 300blk to .556 Hunting, home defense, and competition style shooting, the .300 AAC Blackout does it all. 300 blackout Play around with powders too much handloading and you screw up the timing on the gas system. 300 Blackout Barrels They think its Fudd ammo. Also, you shouldn't trust in Trustpilot. 300 Blackout The SAAMI diagram for the 300 BLK is shown below. The 115 gr (7.5 g) 6.8-round has a higher muzzle energy of 1,694 ftlb (2,297 J) due to its greater velocity, while the 125 gr (8.1 g) 300 BLK round has a muzzle energy of 1,360 ftlb (1,840 J). 300 Blackouts effective range can stretch quite a bit depending upon your goals. Ive seen a few other suppressors suffer the same fate, for the same reason. With or without the can. PWS is as close as you can get right now. The difference between H4198 and TITEWAD would be a good example. Most bullets from both cartridges weigh around 125-Grains. 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. In a 16 supersonic only AR there are vastly superior caliber choices like 6.8SPC. But shortening the guns usually has resulted in less accuracy. Since suppressors are verboten in CA, I shoot 120g supersonic. With the War on Terror on the rise at the time, the development was also motivated by the need to produce a .30 caliber cartridge that would produce better results in combat than the 5.56mm rounds that were currently in use. A big factor of consideration when picking a rifle, its barrel length, or ammunition is the type of target you wish to use it on. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. The best option is one that youre not going to like: wait. A longer barrel has a slower twist rate and provides more power and accuracy, which is better for long-range targets. Thats the one, and only reason Im so anal about checking mine on the range, or in the field. The .300 Blackout is a worthy firearm since it gives you the ballistic power of an AK just by switching the upper in an AR. Heavy, expensive, and absolutely fantastic. Not all 7.62 cans are as effective, my Ti-Rant 9 suppresses subsonic 300BLK better (subjectively) than the 762-SDN-6. 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. Had a few questions for you if youd be so kind as to give me a bit of advice . I dont think they are shipping as of yetwhich is a big question why. My handloads have taken a pig and a Racoon. Nicole Krenze, *Competitive Shooter of the Week* 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. With a warm barrel/suppressor unit, it is possible to shoot impressive groups. 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. I have a Q Honey Badger Barrel Assembly which is 7 and a Q Trash Panda. Pick the barrel length (or performance target) you want and build a load around it then you can come up with some educated rules-of-thumb of your own. As weve established, longer barrels deliver the most accuracy and velocity, and the longest .300 Blackout barrel you can get is 16 inches. Those rounds like a slower twist, something closer to 1:10, but no one seems interested in making a barrel for that. Remington Defense was part of the effort, which was no easy task because it included a requirement that it run in standard AR-15 magazines. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. A mystique surrounds the .300 BLK (AAC Blackout), and it overshadows this utility players ability to deliver All-Star numbers in a variety of roles. Web920K views 3 years ago What barrel length is best for 300BLK AR-15s? So, if a 5.56 requires 20 inches of barrel to burn all of its powder, would it make sense to reduce the powder quantity when shooting a 5.56 through a 16 inch barrel (or even something much shorter like a 5.56 pistol)? Flash can under the handguard is sexy and with a 10-inch 300 Win mag rated can is 35.5 inches OAL Always thought of the 300 as a niche caliber, but Im good with that. Shorter barrels do not result in less accuracy. 9 AAC 1:7 melonite barrel is the best Ive tested. Using a short-barreled rifle is ideal for home defense as its compactness makes it easier to maneuver throughout the home. A need for a nimble, stealthy firearm capable of stopping an adversary at moderate to short distances is one of the reasons for developing the .300 BLK. At 16 inches, muzzle velocities are near their maximum. Save my name, email, and website in this browser for the next time I comment. Stay tuned, because we will have more information on them as soon as that information becomes available. In a 16-inch barrel, .300 Blackout ammunition gets impressive velocity and accuracy, allowing you to hit targets over 150 yards away. The latter will stop the bullet long before it exits the barrel due to the additional forces of friction opposing opposing the bullets forward movement. The SAAMI diagram for the 300 BLK is shown below. With these details in mind, the best .300 Blackout barrel length for hunting is one that can hit long-range targets. This ensures that the bullet maintains a more accurate and precise trajectory upon exit and improves the target-inaccuracy issue. As for silencers, theres some competition out there. Because the Blackout is wider, yet they tend to have similar weight, the Blackout has a lower Ballistic Coefficient than the 6.5 Grendel. The barrel's length also allows the bullet to stabilize before exiting the muzzle, leading to a flatter trajectory and better accuracy. A 1:8 twist works best with the light-weight supersonic rounds. Instead, they built the round from the M4-compatible 5.56mm cartridge. For 5.56 NATO, that point is 20 of barrel. Yeah, but 9 barrel in a folder housed in a backpack is absolutely useless in .308 or 5.56. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. While you can, that is. Wheres a good source for ballistic data muzzle velocities for various bullet weights , loads, fired from various length barrels. One for the M16 regardless of barrel length. Mission accomplished. Based on feedback from shooting experts, the best barrel length for .300 Blackout suppressed is 8 to 10 inches. Like you stated, as long as there is more pressure pushing the bullet forward than barrel friction retarding it, the bullet will continue to accelerate. The shortest .300 Blackout barrel we have in stock is the 6-inch barrel. Conversely, its lightweight projectile bleeds energy downrange, the reason Hornady lists it as a target shooting and varmint hunting load. Jones design of .300 Whisper, gave it an ever so minor redesign, renamed it, and submitted it to SAAMI for certification. 300 AAC Blackout Preparing for 300 BLK upper build and have further questions: I want to use both sub and supersonic ammunition and am a reloader so leaning toward the 1/8 twist to take advantage of the calibures flexibility. The odds are good enthusiasts will see diminishing, if any, return for running subsonic cartridges through 18-inch barrels or longer. The longer the barrel, the greater the tendency for it to move while firing imparting a POA-POI shift. Heavy subsonic ammo in a 10-inch barrel may have lower velocities, but allows for the use of a suppressor without damaging your hearing. Have had a LOT of different ARs including a Colt upper in 7.6239 that I killed my first deer with! _gaq.push(['_trackPageview']); 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. _gaq.push(['_setDomainName', '.accurateshooter.com']); First of all, with 300 BLK, if you are switching from supersonic to subsonic rounds, you might want to be able to quickly make the change from unsuppressed to suppressed. The 16-inch barrel also delivers greater energy on impact regardless of the ammo type. Wilson Combat 11.3 barrel (worried this is too long) 300BLK vs. 5.56? 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. I took that pistol with 220 grain ELD-X over 10.6 grains of AA 1680 And hit the 19 plate the second shot with the red dot! 300 Blackout Ballistics The last thing you ever want is a loosening silencer while shooting rapid fire or full auto. With supersonic rounds for maximum muzzle velocity to subsonic loads that quiet the roar by slowing the pace. To add Im also a lefty so want to manage the gas as much as can be done. 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. Barrel Length In barrels16 or longer it is going to have a good 100-200 fps over the BLK using 110-115 grain projectiles. It also singes the hair on my knuckles. vs 300 Blackout (with ballistics charts Scroll right to see energy, drop and coefficient data. 125 and 225-gram .300 ammo fired from both barrel lengths can travel 100 yards without dropping. Sig ONLY uses that 6.75 (not 6) barrel length for their Military full auto Black Mamba entry gun MCX. Definitive Guide to 300 Blackout However, a 20+ inches barrel may be too unwieldy and impractical for anything but target shooting. As such, a subsonic 300 Blackout load makes an ideal accompaniment to a suppressor, suiting it well for (A) tactical situations where ear protection would be impractical, and (B) hunting hogs without scattering the whole pack after the first shot. From there it really degrades. BBTI - Ballistics by the Inch :: Home Shorter barrels are ideal if you want a concealable and easy-to-carry gun, while a longer barrel is the best choice for optimal accuracy. 300 Blackout It happened that way because when the Russians developed the round, all of their 7.62mm barrel making machinery was built to make 1:10 twist barrels for a bazillion Mosin Nagants and a swag of machine guns in 7.62 x 54R. 7.62 x 39 usually runs in barrels with a 1:10 (ish) twist. 300 Blackout Ballistics
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