I dont think you can get there in 9 inches with full-size powder loads regardless of how fast-burning they are. [Email your firearms-related questions to Ask Foghorn via[emailprotected]. 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. Short-barreled rifles come highly recommended for home defense because the compactness makes the weapon easy to wield within the walled and close quarters of a home. 4. The 300 Blackouts sleeker bullet has a higher. Ed 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. Thats 8 inches of barrel for the 300 BLK 1-8. The .300 Blackout barrel delivers firepower and accuracy comparable to longer barrels. Comparing my 5.56 barrels (18.5, 14.5 and 10.3) is a whole different story. But on the good side, you cant have too MANY cans. My handloads have taken a pig and a Racoon. The 300 Blackouts .30 caliber bullet can be made especially long, and as the result may weigh up to 220 grains quadruple the weight of the typical 223 Rem rounds. barrel as the majority of common loadings just dont need anything longer. Barrel twist rate matters as well, its another factor to consider when choosing barrel length and determining 300 Blackout effective range with your rifle. A second stamp for the suppressor, a separate serialized firearm.. But double taps on steel from 100 yards with subs is. These loads are heavier than most rounds and feature an adjusted powder charge that delivers peak bullet velocity by combusting completely within short barrels. Had a few questions for you if youd be so kind as to give me a bit of advice . 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? Its an ad. That typically occurs in much longer barrels that are commonly in use. Great Brass: No Case forming is required just buy Lapua 300 BLK brass. As a simple example, shooting Titegroup and Blue Dot out of my SD9VE with a 4 barrel gives almost no meaningful velocity change. Spend the money on a decent upper. Really -- the largest difference is barrel length. This is because the latter is thicker and wider, causing more drag as a projectile. 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). 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. 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. A 16-inch barrel ensures complete gunpowder burning to fire rounds with maximum force. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. The Hornady Sub-X 190-grain load, for example, exits the muzzle of a 16-inch barrel at 1,050 fps, where it is carrying 465 foot-pounds of energy. Jones, tailored for heavy projectiles that do not break the sound barrier (subsonic), was probably best known at the time and popular enough that the term wildcat does not apply. This length ensures complete gunpowder combustion to generate maximum velocity and stabilizes the bullet for a flatter trajectory and improved accuracy. There is no real difference in muzzle blast from either, both rifles use identical Surefire brakes. 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. Nothing further than that is as effective since the gunpowder burning would be inefficient in the spare room. })(); To comment on a post, click Post Title or "Comment" Link. We will promptly replace or repair any product that we determine to be defective. Have been shooting 300 for a few years now. Conversely, its lightweight projectile bleeds energy downrange, the reason Hornady lists it as a target shooting and varmint hunting load. Really -- the largest difference is barrel length. Damn was my arm sore on the 7th day, so I rested . The stiffer barrel damps harmonics. You can either start with a barrel length, or a baseline load. 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. For those with suppressors, the 1:7 twist favors the heavier subsonic rounds. Chamber erosion, out of battery detonations in < 2k rounds, most of them. Wideners offers a variety of loads, in bullet weights that vary from 110- to 220-grains. It could, if youre hand loading. 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. With a warm barrel/suppressor unit, it is possible to shoot impressive groups. At 10-inches, muzzle velocity hasnt reached its peak. Part of that equation is the use of subsonic loads with heavy bullets and powder that burns completely in that abbreviated barrel. This means that one gun can serve as two just by switching the uppers. ), while others may be better in 8 or 10 barrels. 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?? Ive seen a few other suppressors suffer the same fate, for the same reason. 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. Did you get it repaired? The 16-inch barrel also delivers greater energy on impact regardless of the ammo type. 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). 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. Only specific barrel and ammo testing will tell, though. Accuracy differences would be more apparent in supersonic loads where the transition from supersonic to sonic happens before the target. A measurement of 130db is horrible. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. This may possibly be true, but I dont see links to formally derived stats to back up this claim. 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 9 inch barrel is definitely a handy length, but it is certainly not the fastest. 5. Mike: I cant seem to edit my comment. Besides being powerful and efficient, .300 Blackout rounds are ideal for home defense because they are lethal when fired from short-barreled guns. When picking out a muzzle for your assembly, keep in mind the muzzle's compatibility with available suppressor fittings. For 300 AAC Blackout, that point is 9 inches of barrel. This isnt that hard. Having the barrel + suppressor be only 9+4 inches (13) long would be neato. Stay tuned, because we will have more information on them as soon as that information becomes available. 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). I then hit it 15 times in a row. You can now purchase quality factory ammo and even premium Lapua 300 BLK brass. A bullet also travels less horizontal distances from wind when it is faster. 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. Military manufacturers will still load for 20, because they have to accommodate the M4, M16, M249, etc. 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. While on a 16-inch barrel, it reaches speeds of approximately 2400fps. A lighter gun via barrel would allow more other things to be used. If you start with wanting a suppressed gun, you will eventually get to the 300. 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. 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. 300 Blackout WAS stolen from 300 Whisper. Cartridge Overall Length: 2.02 inches. They are as dishonest as BBB/Angies List/etc. Sig does plan for a civilian 300 barrel. For 300 AAC Blackout, that point is 9 inches of barrel. Been there, done that. In a 16 supersonic only AR there are vastly superior caliber choices like 6.8SPC. We refer to it as one rotation over a particular inch of barrel. And cheaper to boot. It probably worked loose after multiple shots, and somebody forgot to tighten it back up. 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. This means the .300 Blackout is more effective at long distances. From there it really degrades. On the other end of the spectrum are loads that send their bullet traveling faster than the sound barrier. Supersonic ammo retains rifle caliber velocities, has increased effective distance, and bullet drop is greatly reduced. Getting away with it because they had deeper pockets (costs a lot to get SAAMI cert) and Remington Defense backing. I get a rifle firing sound which seems down range. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. At 300, holdover is only 23.4 inches. Let's find out! 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. 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. 4 models Rainier Arms AR Ultramatch MOD2 300BLK Barrel $400.00 Final Sale. Advanced Armament Corporation began developing a .30 caliber subsonic cartridge optimized for the M4 platform in 2009. It is cross-compatible with. Visit us today to browse the .300 Blackout barrel lengths. ALL RIGHTS RESERVED. The kissing cousins resemble twins at a distance, but the similarities end at projectile girth. 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. Lets explore all this caliber has to offer including an in-depth look at 300 Blackout Ballistics. Wildcattersgun owners who fabricate and reload cartridges of their own designexperimented for years with a .30-caliber AR-15-friendly version. Here are answers to common questions asked about .300 Blackout barrel length: The length of a .300 Blackout barrel affects accuracy in several ways. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. For example, if you shoot the same Hornady Sub-X 190-grain load from a 16-inch barrel, it will drop 33 inches at 200 yards a 14-inch improvement over shooting with a 10-inch barrel. Web5 models Noveske Lo-Pro Gas Block 300 AAC Blackout Barrel (1) As Low As (Save Up to 14%) $351.50 Final Sale. Despite its compact size, a .300 BLK round fired from a short barrel can still hit targets up to 100 yards away. 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. Save my name, email, and website in this browser for the next time I comment. The barrel should also deliver enough bullet velocity to hit far-off prey with deadly impact. But what really makes me love it is the wide variety of calibers it can be used on. 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). The more we all know, the better organized and stronger the shooting and hunting community will be. Why Shoot a 300 Blackout? 2) would you build again with the same silencer? With or without the can. And it is VERY quiet AND compact. If I had an adjustable gas block maybe but in reality I probably need Rifle+2 gas. 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). Even better, the .300 Blackout barrel comes in various lengths, allowing you to pick a length that best fits your needs. Any insight on following: 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. With supersonic rounds for maximum muzzle velocity to subsonic loads that quiet the roar by slowing the pace. Consider a cartridge that has enough energy to travel 1000 yds in free air, standard conditions. Ive had no problems with PSAs Cust Service. 7.62 has a wider casing and requires different size magazines along with a different bolt. .the same content appeared at breachbangclear.com about a week ago, they dont attach a name to it either. The 300 Blackouts recoil is not significantly different from the 5.5645, and its price isnt prohibitively higher. 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. Heavy subsonic ammo in a 10-inch barrel may have lower velocities, but allows for the use of a suppressor without damaging your hearing. For 5.56 NATO, that point is 20 of barrel. 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. I was understanding that my 5.56 with 55 grain bullet needed a twist of 1:7 to be right. I was under the impression that accuracy needed to match bullet weight, (already mentioned), barrel length (also mentioned), and type of powder used. 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. 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). Fortunately, you can reduce gunfire noise to protect your ears or hide your position by adding a suppressor to your barrel. It didnt take long for engineers at two of the industrys finest to solve the problem, though. I dont think they are shipping as of yetwhich is a big question why. Niche it may be, but it is exceptionally useful in that niche. 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. Daniel Squ, Brass-cased ammo generally outpaces steel in every, *Competitive Shooter of the Week* On the flip side SIG SAUER seems to think that 6 inches is perfect for them (their new MCX uses a 6-inch barrel). There arelots ofbetter options that have come on to the market in the last few years, and the 762-SDN-6 just hasnt held up to the newer competition. 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. (function() { They lack the mass to carry a proportionate level of energy at downrange, though. 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. That way you could further save length on the rifle. 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. 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. Just a tiny bit louder but shorter and lighter is the versatile Silencerco Omega. So, I dont know, but its all very interesting to me. The SAAMI diagram for the 300 BLK is shown below. One has operated perfectly right out of the box. Some folks wonder why consider a 300 BLK? Looks wild. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. 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. 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. Even so, 1:7 isnt terrible. What's the Best Barrel Length for .300 Blackout? 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. Its also long enough to deliver sufficient bullet velocity to hit targets accurately at 100 yards. The 300 Blackouts .30 caliber bullet can be made especially long, and as the result may weigh up to 220 grains quadruple the weight of the typical 223 Rem rounds. Not a bad question at all. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. Other 300 BLK Resources Much better QD system than AAC, and with the replaceable mounts, you can even go direct thread if you want. creates and publishes industry standards for safety, interchangeability, reliability and quality, as well as coordinates technical data for agencies, enthusiasts and manufacturers. 300 Blackout is taking the shooting world by storm, and for good reason. Though the muzzle rise and recoil forces are not entirely negligible, they are not enough to affect follow-up shots for the shooter. Drop is predictable; wobble is not. WebThey found the optimal barrel length for 300 BLK is between 9" and 11.5". It also has a great barrel life, which means it can go for long periods and operate effectively under varying conditions. Sign up for our newsletter to receive updates and exclusive offers, Copyright 2023- Ballistic Advantage - All Rights Reserved. We also offer our patented AR-15 and .308 Easy Jigs which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required. I would look into making/getting a telescopic suppressor (reflex design). 300 BLK by AAC: An Introduction by Paul Erhardt. There is, however, a point of diminishing returns. _gaq.push(['_setDomainName', '.accurateshooter.com']); 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. I was thinking something along those lines, too. 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. A big boom, and a really big flash, sounds like fun, when fun is the goal, anyway. As always, train with your rifle and make sure you know your intended purpose before you buy. Not all 7.62 cans are as effective, my Ti-Rant 9 suppresses subsonic 300BLK better (subjectively) than the 762-SDN-6.

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