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. You have entered an incorrect email address! Sounds like somebody has way too much cash on his hands. It didnt take long for engineers at two of the industrys finest to solve the problem, though. 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. In large part because of PSAKs being very dangerous garbage until very recently. Thats the one, and only reason Im so anal about checking mine on the range, or in the field. I know thats a long discussion, but Im primarily wanting close range tactics with a very short barrel (likely 9). Keep reading to discover the best barrel length for .300 Blackout for different shooting scenarios. On a gun you plan to carry, super heavy barrels are not ideal. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. 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. 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. Let your fellow shooters know share this article using the Facebook, Twitter and other social media icons below.
Great Brass: No Case forming is required just buy Lapua 300 BLK brass. 1:8 or increasingly, 1:7, especially if you want to stabilize subsonic, LONG bullets at low temperatures.
300 AAC Blackout Ultimate Guide Hope this helps. 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. Sound travels at 1,100 fps at sea level on a standard day. Not a bad question at all. Wideners offers a variety of loads, in bullet weights that vary from 110- to 220-grains. If you start with wanting a suppressed gun, you will eventually get to the 300. The Harvester is a great suppressor. This means that one gun can serve as two just by switching the uppers. The ability to shoot full auto 300 BLK through an SBR with this can attached is impressive. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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). Using a short-barreled rifle is ideal for home defense as its compactness makes it easier to maneuver throughout the home. Have an 8.2, 10.5 and a 16.0 inch. Granted, revolvers have a barrel / cylinder gap, but that is a separate issue. Better question still. The .300 BLK bullets are 0.30 inch in diameter (7.62 mm) and the .223 Rem (5.56 mm) is 0.224 inch. Affordable Factory 300 BLK Ammo is Available. Also, you shouldn't trust in Trustpilot.
Barrel Length 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. Stay in touch with Widener's, be the first to know about new articles, products, and more. If you get too close to your prey, you may spook it, causing it to run off before you can shoot. At 16 inches, .300 Blackout barrel muzzle velocity is close to its peak, giving you a powerful weapon for making accurate long-range shots. AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. Some folks wonder why consider a 300 BLK? However, if you want the best barrel length for .300 Blackout home defense, we recommend not going shorter than 6 to 8 inches. Theres no shortage of creativity among enthusiasts when it comes to the search for that holy grail of loads. Sure, you could just leave the suppressor attached, but Id rather not have it see the wear and tear if it doesnt need to. 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. 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. The. This compatibility means that it can allow for major savings if you're a gun enthusiast who likes to stay on a budget. The military roots still show in the selection subsonic loads, although its neighborly friendly to ditch that familiar crack as the bullet breaks the sound barrierwhether its quieted at the muzzle by a suppressor, or not.
300 Blackout Guide: Best Barrel Length, Build 300 HAM'R These loads are heavier than most rounds and feature an adjusted powder charge that delivers peak bullet velocity by combusting completely within short barrels. Ask Foghorn: What Barrel Length for a 300 AAC Blackout Rifle? 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. The SAAMI diagram for the 300 BLK is shown below. http://thetruthaboutguns.com/author/foghorn/, Illinois Freedom Week Starts Today: Federal Court Blocks Enforcement of Illinois Assault Weapons Ban. A very hot load in 300BLK I use is 120gr Nosler BTHP with 21.0Gr H110. 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 1:8 twist works best with the light-weight supersonic rounds. Here are the key reasons you may want to acquire a 300 AAC Blackout upper for your AR: 1. I avoid max loads to increase case life, so speed isnt as important as how accurate the load will shooot. Best Barrel Length For Suppressed 300 Blackout For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10. If your barrel is 8 to 10 inches, attaching a 6-inch suppressor will take the barrels length to 14 to 16-inches. The 16-inch barrel also delivers greater energy on impact regardless of the ammo type. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. The end caps on this rifle can be changed as well to mount it on different rifles with different thread pitches, but the stainless steel baffles arent great for full auto fire (they will probably melt). 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. Any time you put a can on a rifle, an adjustable gas block will allow you to tune it. If thats a factor, then it would maybe only come into play at great distances? Personally, if I had to do it all over again, I would definitely not go with a 762-SDN-6. Sorry to be bearer of bad news. Lantac or Gemtech BCG (want to ensure proper cycle) And cheaper to boot. .300 BLK ammo fired from a short barrel can hit targets at 100 yards, which is more than enough range for home defense. In short, barrel length arguments or advice are pretty worthless in comparison to having actual mathematical data and testing. Its an efficient round, but probably gets max velocity from 18-24 or maybe even 26 of barrel length. A look at 300 Blackout ballistics including velocity, energy and drop data for some of the most popular loads among American shooters. The 6.5 Grendel is a lower to mid-power 26 caliber cartridge. Web920K views 3 years ago What barrel length is best for 300BLK AR-15s?
vs 300 Blackout (with ballistics charts Whether youre hunting, defending your home, or just shooting suppressed at the range, 300 Blackout is a popular and adaptable cartridge. For 5.56 NATO, that point is 20 of barrel. Note that they used exactly the same twist on the TT30 and TT33 auto pistols and millions of SMGs chambered in 7.62 x 25. This issue isnt unique to 300 Blackout bullets, though. I need to get the lathe going as well, and I havent had the time or patience to do it. I think you still have cut the barrel down if you want a shorter barrel. For 300 AAC Blackout, that point is 9 inches of barrel. Why Shoot a 300 Blackout? 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. Most bullets from both cartridges weigh around 125-Grains. He never got it to run right and put too much money into it. 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. 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. Best twist rate for 300 Blackout? Bullets make a similar noise, although not nearly as earth rumbling, that is very recognizable and isnt always advantageous in combat. 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. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. Bullet drop is calculable, though, so that should really fall under marksmanship, as opposed to intrinsic accuracy of the rifle? I have a 762-SDN-6 suppressor on a 300 BLK rifle I built with a 16 barrel shooting subsonic 220gr ammo but I dont get the tick, tick, tick when shooting. A fast attach lets me do that.
300 Blackout Effective Range & Best Barrel Length 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 will be NINE inches in length. The shorter a gun barrel, the more the gas expulsion at the muzzle equals a relatively louder sound every time you shoot. WARNING: With some bullet options (and setback during chambering) 300 Blackout rounds will go into a .223 chamber and fire. For 5.56 NATO, that point is 20 of barrel. Damn was my arm sore on the 7th day, so I rested . Let's find out! (function() {
Ive soured on fast attach systems not least because the ratchet on my 762-SDN-6 gave out after three years and direct thread is the way to go. The companies didnt start completely from scratch, though. .300BLK may be great in a 9 barrel with some loads (powder, charge weight, primer, bullet, internal case capacity, etc. So, I dont know, but its all very interesting to me. A long barrel also provides the runway a bullet needs to stabilize fully before exiting the muzzle. There is no real difference in muzzle blast from either, both rifles use identical Surefire brakes. Thats serious power up close, but that slow speed and heavyweight takes a toll at 500 yards. The more we all know, the better organized and stronger the shooting and hunting community will be. After investigation, AAC found the 7.6239 cases aggressive taper too extreme for a standard M4 magazine to accommodate.
300 HAM'R Its an ad. http://blog.silencershop.com/300-blk-impressions/ A lot of variables involved. Most bullets from both cartridges weigh around 125-Grains. 7.62 has a wider casing and requires different size magazines along with a different bolt. Some powders should not fill the case because of their density and overpressure problems with that much powder. But if the amount of gunpowder to be burned is held constant, the length starts becoming a drawback. Keep in mind, the odds are good that powder mix completely burns in that 16 inches of test barrel. Longer barrels also screw up the timing, 16 with carbine gas is on the outside fringe of reliable for the 300. Exactly what Int19h (?) 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)? But its the opposite with the 300 AAC? It was designed to burn in short barrels and anything more is really just excess weight. ps.the arm brace apparently was deemed legal by ATF for incidental resting on your shoulder. 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? The deer Ive taken with my 8 300 BO dont know or care. Its also long enough to deliver sufficient bullet velocity to hit targets accurately at 100 yards. Your second paragraph is spot on!
300 blackout They are as dishonest as BBB/Angies List/etc. 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. For long-range targets, barrel lengths of up to 16 inches are available. So, dont read to much into the issues. No one mentioned differences between polygonal rifling vs lands&grooves . 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. If you want the longest range with a suppressed .300 Blackout barrel, get a 16-inch barrel and add a suppressor. Mike: yes. Sig ONLY uses that 6.75 (not 6) barrel length for their Military full auto Black Mamba entry gun MCX. I had a table at the local gun shows for years. Fortunately, you can reduce gunfire noise to protect your ears or hide your position by adding a suppressor to your barrel. 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. 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. 21.5Gr shows pressure signs. 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. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. SAAMI creates and publishes industry standards for safety, interchangeability, reliability and quality, as well as coordinates technical data for agencies, enthusiasts and manufacturers. There is almost NO need to have a barrel longer than 8-9. Maybe not so much that the longer barrel is directly responsible for greater accuracy, but indirectly? Web5 models Noveske Lo-Pro Gas Block 300 AAC Blackout Barrel (1) As Low As (Save Up to 14%) $351.50 Final Sale. 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. As for velocity gained with added barrel length (from loads not tailored for subsonic), Hornadys website FAQ explains there is no way to simply calculate gain or loss because due to variations in individual firearms, but on average, velocity gains or losses will be approximately 25 or 35 feet per second per inch of barrel differenceTo truly measure performance, the load should be tested over a chronograph.. Muzzle Velocity: 2,259 fps. The accuracy of a .300 Blackout barrel will depend on the exact round and barrel length you use. agreed on this. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. How many ATF officers does it take to count to two stamps? 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. 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. We refer to it as one rotation over a particular inch of barrel. AAC didnt develop a damned thing. 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. Web5 models Noveske Lo-Pro Gas Block 300 AAC Blackout Barrel (1) As Low As (Save Up to 14%) $351.50 Final Sale. Factory Starline and SIG produced 300 HAMR cases are available, but cases can be made from common and available 5.56/.223 cases. 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). Daniel Squ, Brass-cased ammo generally outpaces steel in every, *Competitive Shooter of the Week* 4. Really -- the largest difference is barrel length. But double taps on steel from 100 yards with subs is. Groups 110% of the size of my 16 5R barrel on the 700 test gun. This issue isnt unique to 300 Blackout bullets, though.
300BLK Barrel Length & All Things 300 Blackout Answered However, heat build up effects point of impact. They straight stole J.D. While I can see Nicks point in preferring screw on suppressors over fast attach systems, there are reasons why the fast attach is superior in some cases. 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. I have seen some measurements as high as 123db which is still VERY quiet. And it is VERY quiet AND compact. These days, #1 on my list, especially for new silencer owners, is the Liberty Mystic-X. 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. 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 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. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. If you want a compact package with acceptable performance out of both supersonic and subsonic loads, then 8-10 is a good compromise. Planes that increase their velocity until it reaches and exceeds that mark generates a sonic boom. 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. 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. 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. Lack of wind drift alone is a decided advantage, along with a flatter trajectory. 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. For optimal home defense with the 300 Blackout round, a barrel length of at least 6 to 8 is recommended. 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). ALL RIGHTS RESERVED.
Handloading the .300 AAC Blackout Adjustible Gas Block??? Fortunately, you dont have to look far. .300 Blackout ammo can be loud, especially when shooting supersonic rounds. Did you get it repaired? So heavy a bullet conveys a subsonic muzzle velocity and correspondingly softer report. Chamber erosion, out of battery detonations in < 2k rounds, most of them. 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. 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. The difference between H4198 and TITEWAD would be a good example. For 300 AAC Blackout, that point is 9 inches of barrel. My test gun is a Remington 700 with 16 5R barrel. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. At 10-inches, muzzle velocity hasnt reached its peak. A 9 inch barrel is definitely a handy length, but it is certainly not the fastest.