300 blackout barrel length chart

Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Heavy, slow moving subsonic bullets experience more bullet drop than fast, more aerodynamic bullets. A 9 inch barrel is definitely a handy length, but it is certainly not the fastest. The 16-inch barrel also delivers greater energy on impact regardless of the ammo type. There is, however, a point of diminishing returns. Velocity will increase as long as there is sufficient pressure behind the bullet to accelerate it. Let your fellow shooters know share this article using the Facebook, Personally, if I had to do it all over again, I would definitely not go with a 762-SDN-6. Nobody shows pics like mine because it was not big dealnothing to talk about. If it's inside your house in home-defense scenarios, a short barrel will allow for better maneuverability. This means that one gun can serve as two just by switching the uppers. 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? One of those AI chatbots thats been in the news recently? According to Advanced Armament Corp the entity that developed the .300 Blackout cartridge its optimized for a 10 barrel with suppressor. Easy Conversion: Use your current AR lower, bolt/carrier, buffer, and magazine. Great Brass: No Case forming is required just buy Lapua 300 BLK brass. 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 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. If you are shooting only subs, then even something as short as the Sig Rattlers 5.5 barrel (less than 3.25 of rifling!) 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. 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. They think its Fudd ammo. Did you ever wonder why PSA always has 5 star reviews on their website Pistol calibers often reach near optimum velocity at about 8-10; longer lengths may increase velocity, but only by slight amounts. Even better, the .300 Blackout barrel comes in various lengths, allowing you to pick a length that best fits your needs. In a 16 supersonic only AR there are vastly superior caliber choices like 6.8SPC. The .300 Blackout also comes in a supersonic variant, which means once fired, the bullet travels faster than the sound barrier. 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. 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. I dismiss this entire article as slow news day page filler. . 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. 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. If you want the longest range with a suppressed .300 Blackout barrel, get a 16-inch barrel and add a suppressor. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. We refer to it as one rotation over a particular inch of barrel. 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. The Harvester is a great suppressor. Its a few hundred FPS from my 16 AR9. 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. Comparing my 5.56 barrels (18.5, 14.5 and 10.3) is a whole different story. This is not a function of the dimensional cartridge at a top level so much as it is a function of the SPECIFIC loaded cartridge you are using. Why would you detach your suppressor for supersonic ammo? In my ignorance, I would say its because I want to reduce wear and tear on the suppressor. 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. Despite its compact size, a .300 BLK round fired from a short barrel can still hit targets up to 100 yards away. In theory, a longer barrel offers more room for bullet expulsion. From there it really degrades. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. A 9 to 10-inch .300 Blackout barrel keeps a gun portable and short enough to wield easily. It is much less sensitive to muzzle velocity loss through short barrels than the 5.56. Some powders should not fill the case because of their density and overpressure problems with that much powder. Just a tiny bit louder but shorter and lighter is the versatile Silencerco Omega. For the best experience on our site, be sure to turn on Javascript in your browser. Its the pressure of expanding gas behind the bullet that accelerates it, and it doesnt fall off at 9. 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. A 20 inch barrel will not hinder you with your AAC. This makes the .300 Blackout an effective, versatile, and reliable close combat round. This was years ago and PSA was no help at all. I am always available for you. Ive had no problems with PSAs Cust Service. The ability to shoot full auto 300 BLK through an SBR with this can attached is impressive. However, for the best results, we suggest that you use recommended hunting ammunition variants of the .300 Blackout, like the 125-135 grain range. (In the early days of jet aircraft, a lot of planes were shaken apart when passing through the sound barrier.) 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. 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. Especially since there are some lightweight 308 ARs out there now. 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. Yet this unnamed writer says thats incorrect, and the optimum is at 16. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. For .22LR, for instance, the optimum length is 16. As for waiting on Sig Suppressors good luck with that. 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 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. As for silencers, theres some competition out there. The shortest .300 Blackout barrel we have in stock is the 6-inch barrel. 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. My friend bought a 300 Blackout upper from PSA and put a can on it. 300 Blackouts effective range can stretch quite a bit depending upon your goals. FWIW. Instead, they built the round from the M4-compatible 5.56mm cartridge. The .300 Blackout is quite effective when hunting for animals like wild pigs, deer, or varmint. 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. This isnt that hard. Longer barrel lengths offer greater accuracy and velocity, with a maximum length of 16 for the 300 BLK. Your second paragraph is spot on! .300 Blackout ammo can be loud, especially when shooting supersonic rounds. The odds are good enthusiasts will see diminishing, if any, return for running subsonic cartridges through 18-inch barrels or longer. ps.the arm brace apparently was deemed legal by ATF for incidental resting on your shoulder. This is why target shooters prefer short fat barrels they distort less under heat and cool faster. Really -- the largest difference is barrel length. The length of a barrel also dictates the rifle's twist rate and thus the bullet as it travels down the barrel. Affordable Factory 300 BLK Ammo is Available. I had a table at the local gun shows for years. However, since a suppressor adds to the length of your gun, you dont want to add a suppressor and make your gun long and clumsy. 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. Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. Our initial research data covered the relationship between barrel length and velocity for some 13 common handgun calibers/cartridges. PWS is as close as you can get right now. For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. Great! Lastly, a 16-inch barrel provides a long line of sight to improve your aim. Contact our team at 80 Percent Arms to learn more. Speared on by no issues I built a 10.5 inch pistol with an arm brace LOL. 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. One has operated perfectly right out of the box. http://blog.silencershop.com/300-blk-impressions/ Wondering if you know if theres a significant advantage in range with a 10.5 (both sub and super-sonic). They are as dishonest as BBB/Angies List/etc. 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.. said. For 300 AAC Blackout, that point is 9 inches of barrel. But shortening the guns usually has resulted in less accuracy. The 300 Blackout round is an excellent choice for home defense as it combines power and efficiency with lethality when fired from a short-barreled rifle. For the best experience on our site, be sure to turn on Javascript in your browser. 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. We refer to it as one rotation over a particular inch of barrel. .300 BLK ammo fired from a short barrel can hit targets at 100 yards, which is more than enough range for home defense. 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. 300 Blackout SAAMI Cartridge Specification. 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. I reckon most of us can read between the lines on that. At 16 inches, .300 Blackout barrel muzzle velocity is close to its peak, giving you a powerful weapon for making accurate long-range shots. Ed A lot of variables involved. 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 just ordered a 16 inch barrel and stuck it on my Stag upper. A longer barrel has a slower twist rate and provides more power and accuracy, which is better for long-range targets. I get a rifle firing sound which seems down range. If you look up brown recluse or rattlesnake bites on the internet youll be scared shitless from the images. Hornadys American-Made Ammo Cabinets Keep Your Gun Food Secure. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. 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. Please tell us more about how awesome it is. OUR GST-9 IS UNAFFECTED BY THE LATEST 12/28 ATF CLARIFICATION LETTER & SHIPS IN 3 DAYS! laughably entertaining. 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. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. Sorry to be bearer of bad news. Spend the money on a decent upper. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. What is Foghorns opinion of the Gemtech GMT-300BLK as a suppressor for a .300 BLK? By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. With supersonic rounds for maximum muzzle velocity to subsonic loads that quiet the roar by slowing the pace. A 16-inch barrel ensures complete gunpowder burning to fire rounds with maximum force. The powder needs not only fully burn, but also the products of said burning need to drop in pressure, before you start seeing a decrease in velocity. This issue isnt unique to 300 Blackout bullets, though. For Pete this isnt ideal, but for the average person this would be a good option. 300BLK vs. 7.62x39? , in bullet weights that vary from 110- to 220-grains. For an apples-to-apples comparison, the Hornady V-Max 110-grain load (also zeroed at 100 yards through 16 inches of barrel) has a muzzle velocity of 2,375 fps. 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. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. After investigation, AAC found the 7.6239 cases aggressive taper too extreme for a standard M4 magazine to accommodate. Its not going to be long until you want to suppress it and/or SBR it. The best barrel length for .300 Blackout depends on how you intend on using your gun. For 300 AAC Blackout, that point is 9 inches of barrel. Damn was my arm sore on the 7th day, so I rested . Have been shooting 300 for a few years now. Although the 300 Blackouts effective range depends on the shooter and application, the chart above provides rough guidelines for consideration. The 300 AAC Blackout definitely works for hunters who want to use their AR15-platform rifle. The SAAMI diagram for the 300 BLK is shown below. 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. Accuracy differences would be more apparent in supersonic loads where the transition from supersonic to sonic happens before the target. 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. It will also be fitted with an Omega can. A buddy has a 100yd range in his back yard. Everything from .22lr to subsonic .308 Winchester, and even 5.56 NATO from a 16 barrel. If you're looking for a multi-purpose load for the .300 AAC Blackout, this may be the best bullet. In instances where that is not an option, however, you can always go long or brace yourself for those loud blasts with every shot. The twist rate is when the bullet twists within a barrel once fired, which helps keep it at a high velocity and helps maintain accuracy.

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