300 blackout barrel length chart

Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. The shortest .300 Blackout barrel we have in stock is the 6-inch barrel. Wilson Combat 11.3 barrel (worried this is too long) I screwed my walking dead, LEGAL, form 1 Maglite silencer on it. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. However, if you try to shoot custom loaded 7.62 x 39 ammo loaded with a 220gn bullet from a 1:10 twist barrel, you will be disappointed because the bullet will not be DRIVEN fast enough to SPIN fast enough to stabilize correctly. Longer barrels can be more accurate when using fixed sights, because a longer sight radius allows for finer adjustment of aim. 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. Really -- the largest difference is barrel length. 300 Blackouts effective range can stretch quite a bit depending upon your goals. Your muzzle choice should also be in consideration of the flash produced and the muzzle rise with every shot. WebThey found the optimal barrel length for 300 BLK is between 9" and 11.5". The best barrel length for .300 Blackout depends on how you intend on using your gun. Daniel Squ, Brass-cased ammo generally outpaces steel in every, *Competitive Shooter of the Week* The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. Fortunately, you can reduce gunfire noise to protect your ears or hide your position by adding a suppressor to your barrel. Whether youre hunting, defending your home, or just shooting suppressed at the range, 300 Blackout is a popular and adaptable cartridge. We do not recommend choosing a shorter option because the barrel will not be long enough to sufficiently burn gunpowder and provide maximum force to propel the bullet from the muzzle. Sounds like somebody has way too much cash on his hands. According to Advanced Armament Corp the entity that developed the .300 Blackout cartridge its optimized for a 10 barrel with suppressor. (function() { If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. Question of the Day: How Do You Spread the Pro-Gun Gospel? 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. On the flip side SIG SAUER seems to think that 6 inches is perfect for them (their new MCX uses a 6-inch barrel). Keep in mind, the odds are good that powder mix completely burns in that 16 inches of test barrel. The more we all know, the better organized and stronger the shooting and hunting community will be. How is the recoil of the 6.8 vs 300 Blackout? For instance, the nine-inch barrel has a 100-inch drop at 410 meters, while a 16-inch barrel has a drop of a 100 inches at 440 meters. Consider a rifle with a barrel 1000 yds long. And anything over 75 grain was better with a 1:9 twist. It will be NINE inches in length. Don't believe in them, and never will. The .300 Blackout barrel delivers firepower and accuracy comparable to longer barrels. 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). They instead heavily based their new cartridge on SSK Industries 300 Whisper. But what really makes me love it is the wide variety of calibers it can be used on. Although the 300 Blackouts effective range depends on the shooter and application, the chart above provides rough guidelines for consideration. Speared on by no issues I built a 10.5 inch pistol with an arm brace LOL. I reckon most of us can read between the lines on that. 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. 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. There its drop is more than 30 feet (with a 100-yard zero) and energy drops to 309 foot-pounds. Stay tuned, because we will have more information on them as soon as that information becomes available. if you do want to talk, you can come to me. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. It is a niche gun not even available to the public. 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. Our initial research data covered the relationship between barrel length and velocity for some 13 common handgun calibers/cartridges. This high-speed feature means that the bullet will spend relatively less time in motion and thus less prone to the effects of elements like the wind. Consider a cartridge that has enough energy to travel 1000 yds in free air, standard conditions. For hunting expeditions or other long-range requirements, the .300 AAC Blackout has a maximum effective range of approximately 460 meters. 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. Looks wild. I need to get the lathe going as well, and I havent had the time or patience to do it. On the downside, the weight of these bullets prevents them from traveling far and maintaining a flat trajectory. Passing through the sound barrier imparts wobble. The 30 BR is expected to shoot sub .5 MOA out to 300 meters and weight is at a premium for most of these guns. Eventually, they got their own 300 Blackout cartridge SAAMI approved in 2011. Thats serious power up close, but that slow speed and heavyweight takes a toll at 500 yards. They are flatter shooting and, with less time in flight, less prone to the effects of wind. I was under the impression that accuracy needed to match bullet weight, (already mentioned), barrel length (also mentioned), and type of powder used. 7.62 x 39 usually runs in barrels with a 1:10 (ish) twist. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. Nine inches of barrel will give you the perfect balance of light weight and velocity with the 300 BLK cartridge. A look at 300 Blackout ballistics including velocity, energy and drop data for some of the most popular loads among American shooters. For varmint hunters, competitors and gun owners practicing at distance, supersonic .300 BLKs are big medicine. Assuming youre serious about hand-loading, you can purchase internal ballistic software to sort this out from an educated standpoint rather than following rules-of-thumb. The 300 AAC Blackout definitely works for hunters who want to use their AR15-platform rifle. Regardless of the position it plays, the .300 BLKs performance often hinges on finding the best barrel length and load combination for the distance you have in mind. Besides being powerful and efficient, .300 Blackout rounds are ideal for home defense because they are lethal when fired from short-barreled guns. Most bullets from both cartridges weigh around 125-Grains. However, if you want the best barrel length for .300 Blackout home defense, we recommend not going shorter than 6 to 8 inches. Except if it some of those overbuilt pistol cans that are rated for subsonic rifle ammo. 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. Wondering if you know if theres a significant advantage in range with a 10.5 (both sub and super-sonic). With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. https://en.wikipedia.org/wiki/.300_Whisper. The last thing you ever want is a loosening silencer while shooting rapid fire or full auto. If you build an AR pistol, the 300 is the perfect round. The article is a little wordy but does a decent job of explaining that the best barrel length depends on what optimal performance means to you. Not on my 300 blk. It also has a great barrel life, which means it can go for long periods and operate effectively under varying conditions. 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. The 6.5 Grendel is a lower to mid-power 26 caliber cartridge. The only real question is what twist rate to go with. Then, you can fine tune your load to the harmonics of the barrel you are using. Comparing my 5.56 barrels (18.5, 14.5 and 10.3) is a whole different story. By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. The best option is one that youre not going to like: wait. This is why target shooters prefer short fat barrels they distort less under heat and cool faster. Any length over that will actually result in lower velocities. Did you ever wonder why PSA always has 5 star reviews on their website It gives an almost negligible muzzle rise while shooting, meaning most of the energy produced during recoil comes back to the shooter's shoulders. I would look into making/getting a telescopic suppressor (reflex design). 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. _gaq.push(['_setAccount', 'UA-6323545-2']); Sorry to be bearer of bad news. Basically, machine guns get exempt from the stamp for a shorter barrel. Hi Lance, well I thought like you did, stick it on and go but being a dumb old guy I did not bother to research much. Yet this unnamed writer says thats incorrect, and the optimum is at 16. Cartridge Overall Length: 2.02 inches. 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. 8.2 is the shortest Rosco makes and its a really good barrel for me. said. All the links go to Faxons website. By design, the 300BLK just doesnt give up that much velocity until you get down below 9-10 of barrel using factory ammo. CQB isnt a place where bright flashes coming out of a barrel are an advantage, so using a 22-inch tube wont help much, if at all. If you start with wanting a suppressed gun, you will eventually get to the 300. If thats a factor, then it would maybe only come into play at great distances? Granted, revolvers have a barrel / cylinder gap, but that is a separate issue. will be fine. I dont know much about ballistics, but wouldnt the higher velocity associated with a longer barrel mean less bullet drop over longer distances, thus increasing accuracy? I did 100 rounds a night for 6 nights. A long barrel also provides the runway a bullet needs to stabilize fully before exiting the muzzle. This .30-caliber bullet at 500 yards drops by less than 9 feet (21 less than the subsonic version) and it carries 362-foot-pounds of energy there. 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. With or without the can. The .300 Whisper developed by J.D. For the best experience on our site, be sure to turn on Javascript in your browser. 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. However, heat build up effects point of impact. Buy a .308 from a legit company and save yourself headaches. Hey Nick. This was years ago and PSA was no help at all. There was an article on TTAG maybe a year or so ago comparing velocity loss from from a 5.56 16 vs 10 and a 300BLK from 16 to 9. Plus, the long barrel compensates for its rather laborious maneuverability. It didnt take long for engineers at two of the industrys finest to solve the problem, though. Lighter, 125gn bullets wont care, but long, slow bullets need FAST spin-rates. My handloads have taken a pig and a Racoon. 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. However, a 20+ inches barrel may be too unwieldy and impractical for anything but target shooting. With a 20-inch suppressed barrel, you can achieve a bullet velocity of over 2,630 feet per second (fps), leading to more impactful shots and reduced bullet drop. Ive not shot it w/o the can. Not a bad question at all. 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. The barrel should also deliver enough bullet velocity to hit far-off prey with deadly impact. ps.the arm brace apparently was deemed legal by ATF for incidental resting on your shoulder. 5. A 9 inch barrel is definitely a handy length, but it is certainly not the fastest. We are not only talking about powder burn, but the pressure created by the expanding gasses of the powder. Wideners offers a variety of loads, in bullet weights that vary from 110- to 220-grains. 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. 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. Good follow up to your other posts on 300 black. At 300, holdover is only 23.4 inches. (That was a mistake Ill rectify next barrel probably.). 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). A subsonic 300 Blackout round produces comparatively little muzzle flash in addition to a softer report, making it a fine choice for hunting in nighttime and twilight conditions. At 16-inches, muzzle velocities are near their peak. barrel as the majority of common loadings just dont need anything longer. Best of both worlds. Web5 models Noveske Lo-Pro Gas Block 300 AAC Blackout Barrel (1) As Low As (Save Up to 14%) $351.50 Final Sale. For .22LR, for instance, the optimum length is 16. In the chart, bold-faced entries indicate the last distance at which each Hornady load drops less than 5 feet in different length barrelsfor those uncomfortable dialing in or holding over 60 inches. If you want your pistol to have more range, velocity, and accuracy, you can opt for an 8 to 10-inch barrel. [Email your firearms-related questions to Ask Foghorn via[emailprotected]. Even at 300 yards holdover is nearly 9 feet. You can blow up your gun and sustain serious injury. Or is it a different type of powder altogether? 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? Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. This is actually much tighter twist required to stabilize the short 124gn. Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. 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. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. The question that Ive always asked when I look at this is is why hasnt someone figured out one can just as easily make a modern set of 125gr and 220gr 7.6239s and blow away the .300 BLK at its own game? Cartridge Overall Length: 2.02 inches. I was thinking something along those lines, too. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. From there it really degrades. 2) would you build again with the same silencer? WebThe 300 HAMR 1-11.25, 1-13, or 1-15 twist match grade barrels are optimized for accuracy with 95gr to 150gr bullets from 8 to 20 barrel lengths. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. If youre looking for the quietest and best handling setup, you could easily go as short as 7.5, which is offered by makers like Faxon Firearms and others. COPYRIGHT 2021, THETRUTHABOUTGUNS.COM. 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! Though the .300 Blackout was designed to offer the best results in close-range targets, you can use it for long-range targets as well. 21.5Gr shows pressure signs. There have been a number of Kabooms recorded from 300 BLK rounds fired in a .223 Rem/5.5645 chamber. SAAMI creates and publishes industry standards for safety, interchangeability, reliability and quality, as well as coordinates technical data for agencies, enthusiasts and manufacturers. .300 BLK ammo fired from a short barrel can hit targets at 100 yards, which is more than enough range for home defense. Also, you shouldn't trust in Trustpilot. Im not sure if 18 or 20 or 24 would give the absolute greatest velocity, as I havent seen the specs on 300 BLK velocity in a 24 inch barrel. 300BLK vs. 5.56? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Why would you detach your suppressor for supersonic ammo? Muzzle Velocity: 2,259 fps. Subsonic 220Gr loading is 9.6Gr IMR 4227 and that is a near capacity load Id guess there is room for 11Gr. The extra speed can be so great as to cause bullet failure. 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. 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? But all things considered, the .300 Blackout will surely deliver whenever it's put to the task. It seemed to work OK for all those years. The speed of sound is 1,275 feet per second (fps) at sea level and varies slightly with temperature and atmospheric pressure. One of those AI chatbots thats been in the news recently? For you math types out there, a 30 dB reduction is enormous actually better than some earmuffs if the number is correct. Its a 30 second swap from 300blk to .556 Getting away with it because they had deeper pockets (costs a lot to get SAAMI cert) and Remington Defense backing. Pistol calibers often reach near optimum velocity at about 8-10; longer lengths may increase velocity, but only by slight amounts. The only part you need to change is the barrel. 300 BLK by AAC: An Introduction by Paul Erhardt. A buddy has a 100yd range in his back yard. Plus higher velocity typically requires less hold over. 1:8 or increasingly, 1:7, especially if you want to stabilize subsonic, LONG bullets at low temperatures. You can now purchase quality factory ammo and even premium Lapua 300 BLK brass. The difference between H4198 and TITEWAD would be a good example. Perfect for integral suppressor or just using as an SBR/pistol. The length of a barrel also dictates the rifle's twist rate and thus the bullet as it travels down the barrel. Clickhereto browse previous posts]. Their POI remains more consistent. When picking an upper for the setup, you can go either with a T-Marked or a Non-T-Marked, depending on your personal preference. For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. We stand behind all our products and were here to support you. Thats why we recommend you have a dedicated 300 BLK upper and mark your magazines. Also, always, always check your .223 magazines to ensure no 300 BLK rounds worked their way in when you loaded the mags. ANd then you have barrel harmonics to contend with. Subsonic and supersonic ammo both have features that pair well with a variety of barrel lengths. 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. 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. Let's find out! However, even worse for accuracy is the projectile slowing from supersonic to subsonic velocity. But its the opposite with the 300 AAC? Velocity will increase as long as there is sufficient pressure behind the bullet to accelerate it. The 300 Blackout is frequently available with 200 and 220 grain bullets. laughably entertaining. They lack the mass to carry a proportionate level of energy at downrange, though. A 9 to 10-inch .300 Blackout barrel keeps a gun portable and short enough to wield easily. Nowhere above did anyone mention the gas port or that once the bullet passes the gas port theres a significant reduction in pressure pushing the bullet and significantly more drag due to friction . Perfect for integral suppressor or just using as an SBR/pistol. 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. 125 and 225-gram .300 ammo fired from both barrel lengths can travel 100 yards without dropping. He never got it to run right and put too much money into it. In large part because of PSAKs being very dangerous garbage until very recently. The reduced recoil and muzzle rise make taking accurate follow-up shots much easier. 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. Another reason why 9 to 10 inches is the best overall .300 Blackout barrel length is the minimal muzzle rise and comfortable recoil. Because the Blackout is wider, yet they tend to have similar weight, the Blackout has a lower Ballistic Coefficient than the 6.5 Grendel. Let's find out! For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. Another shilling advertisement for Faxon Firearms products. 300 AAC Blackout Ammo Review 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. 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. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. Thats water weight capacity. I would recommend the Silencerco Saker 7.62 instead. 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. Not sure, and maybe Im just splitting hairs. Everything from .22lr to subsonic .308 Winchester, and even 5.56 NATO from a 16 barrel. 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. For 5.56 NATO, that point is 20 of barrel. Longer barrels tend to be less rigid, so people go for bull barrels, but those get heavy so people go for fluted barrels. Thus, proper 300 BLK and .300 Whisper, before it, run with tighter twist barrels. Here is the old barrel length again Longer barrels have been proven to have better velocities and it depends on your burn rate on your powder whether you get the full use of your barrel. I tried 220g subsonic, but the boing of the buffer spring was annoying enough to prompt me to upgrade to stainless and stick with the supersonics. Even so, 1:7 isnt terrible. Not all 7.62 cans are as effective, my Ti-Rant 9 suppresses subsonic 300BLK better (subjectively) than the 762-SDN-6. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Instead, they built the round from the M4-compatible 5.56mm cartridge. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; The barrel also plays a role in the drop rate of the bullet. Affordable Factory 300 BLK Ammo is Available. 300 Blackout SAAMI Cartridge Specification. That way you could further save length on the rifle. But shortening the guns usually has resulted in less accuracy. They think its Fudd ammo. 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. They term best is entirely subjective and influenced by intended purpose and individual needs. At Ballistic Advantage, we offer high-quality barrels for AR-style rifles, and you can find one with the perfect length to meet your handling and accuracy preferences. 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. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. Mike: I cant seem to edit my comment. WebThe 300 HAMR 1-11.25, 1-13, or 1-15 twist match grade barrels are optimized for accuracy with 95gr to 150gr bullets from 8 to 20 barrel lengths. Heavy subsonic ammo in a 10-inch barrel may have lower velocities, but allows for the use of a suppressor without damaging your hearing. This adaptability to the existing rifle specifications was made possible by the fact that the designers and engineers chose not to go down the path of building up from scratch. 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? In short, 9 inches is perfect for a 300 BLK barrel. Drop is predictable; wobble is not. 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. My test gun is a Remington 700 with 16 5R barrel. Both AAC and Noveske use a 1:7 twist rate, while the PWS300 BLK upper uses a 1:8 twist. http://thetruthaboutguns.com/author/foghorn/, Illinois Freedom Week Starts Today: Federal Court Blocks Enforcement of Illinois Assault Weapons Ban. 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. All the pics are Faxon barrels. Reader Pete writes: Hi Nick,I live in Amarillo and really enjoyed your article on your 300 BLK build. AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. BA, Rosco, WC, and others have all worked immediately without any specialty tuning. I doubt you would get extra wear and tear from using supersonic ammo in it. Perfect for integral suppressor or just using as an SBR/pistol. Dennis, running 7.6239 in an AR has a whole bunch of issues on its own. The numbers make it obvious its flatter shooting than the subsonic load.

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