Keep in mind, the odds are good that powder mix completely burns in that 16 inches of test barrel. Plus, the long barrel compensates for its rather laborious maneuverability. Perfect for integral suppressor or just using as an SBR/pistol. Also, always, always check your .223 magazines to ensure no 300 BLK rounds worked their way in when you loaded the mags. Why Shoot a 300 Blackout? 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. 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. Sounds like somebody has way too much cash on his hands. As for silencers, either wait for the SIG SAUER cans to come on the market or get yourself an AAC MG-SD. This issue isnt unique to 300 Blackout bullets, though. You would have to cut down and make your OWN 6.75 barrel since SIg will not sell you one of theirs. 300 Blackout 1-7 vs When an object travels faster than the speed of sound and breaks the sound barrier, it generates a sonic boom. Share the post "300 Blackout Basics Specs and Cartridge INFO", Tags: .223 Rem, .300 AAC Blackout, 300 BLK, AR15, Lapua Brass, Suppressor. Eventually, they got their own 300 Blackout cartridge SAAMI approved in 2011. 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. I dont know how the 30BR compares powder quantity wise to the 300 BLK, but that could account for the difference in barrel length. Also, you shouldn't trust in Trustpilot. 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. Definitive Guide to 300 Blackout A 9 to 10-inch .300 Blackout barrel keeps a gun portable and short enough to wield easily. 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. For example, with a 10.5-inch barrel, the .300 Blackout clocks an average velocity of 2200 feet per second. Great Brass: No Case forming is required just buy Lapua 300 BLK brass. Compared to other bullets, a .300 Blackout is a 30-caliber bullet in a .223/5.56mm shell casing. 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. 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. How is the recoil of the 6.8 vs 300 Blackout? Barrel Length The only thing that barrel length gets you is velocity the longer the bullet is in the barrel and being pushed by the expanding gasses of burning gunpowder, the faster that projectile will be going. 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. 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. .the same content appeared at breachbangclear.com about a week ago, they dont attach a name to it either. vs 300 Blackout (with ballistics charts If you want a compact package with acceptable performance out of both supersonic and subsonic loads, then 8-10 is a good compromise. BBTI - Ballistics by the Inch :: Home Thats the one, and only reason Im so anal about checking mine on the range, or in the field. 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. 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. Did you get it repaired? Great info Nick. 4. 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. 300BLK Barrel Length & All Things 300 Blackout Answered A 6-inch .300 Blackout barrel is short enough to carry as a concealed weapon, and drawing and aiming the reasonably sized weapon is hassle-free. Ask Foghorn: What Barrel Length for At this point, frictional (and other opposing) forces will start to DECREASE velocity. 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. For those with suppressors, the 1:7 twist favors the heavier subsonic rounds. By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. AR-platform rifles optimized to run subsonic 300 Blackout tend to fire supersonic ammo poorly. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. From there it really degrades. 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. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. https://en.wikipedia.org/wiki/.300_Whisper. The 300 Blackouts sleeker bullet has a higher. I was thinking something along those lines, too. 300 Blackout Guide: Best Barrel Length, Build Best of both worlds. Any discussion on the effective range is a minefield full of opinion best tiptoed over by indicating those figures make the .300 BLK at 300-yard shot territory most comfortable for veteran shooters. Even better, the .300 Blackout barrel comes in various lengths, allowing you to pick a length that best fits your needs. The barrel's length also allows the bullet to stabilize before exiting the muzzle, leading to a flatter trajectory and better accuracy. 300 Blackout Effective Range & Best Barrel Length They result in less range and more bullet drop at distance. Barrel twist rate also impacts performance and should be considered when selecting barrel length and determining the effective range of the 300 Blackout. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. Besides being powerful and efficient, .300 Blackout rounds are ideal for home defense because they are lethal when fired from short-barreled guns. Wideners offers a variety of loads, in bullet weights that vary from 110- to 220-grains. For longer range engagements with a suppressed 300 Blackout, use a 16 barrel with a suppressor for an average velocity of over 2,630 fps, leading to more effective shots and minimal bullet drop. ), while others may be better in 8 or 10 barrels. 300 AAC Blackout At 16 inches, .300 Blackout barrel muzzle velocity is close to its peak, giving you a powerful weapon for making accurate long-range shots. [Email your firearms-related questions to Ask Foghorn via[emailprotected]. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrels spin rate. Hey Nick. I was at first considering a 9" barrel with a 1:7 rifling, for that is what the cartridge was designed around. Maybe he purchased them for a few hundred dollars prior to 1986 or inherited them from someone who purchased them for a few hundred dollars prior to 1986. The more we all know, the better organized and stronger the shooting and hunting community will be. COPYRIGHT 2021, THETRUTHABOUTGUNS.COM. Both use AR-15/M4 magazines and cartridge-carrying capacity is identical. Copyright Ammotogo.com 2023 All Rights Reserved. The odds are good enthusiasts will see diminishing, if any, return for running subsonic cartridges through 18-inch barrels or longer. By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. The disadvantage with direct threading is that it will loosen up and start backing off while shooting. 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. Affordable Factory 300 BLK Ammo is Available 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. 300BLK Barrel Length & All Things 300 Blackout Answered 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. You can now purchase quality factory ammo and even premium Lapua 300 BLK brass. Perfect for integral suppressor or just using as an SBR/pistol. Only specific barrel and ammo testing will tell, though. Cartridge Overall Length: 2.02 inches. Thats water weight capacity. Handloading the .300 AAC Blackout SAAMI, the industry standards organization, adopted and standardized the AAC 300 Blackout earlier this year. Out of a cold unit, you will always have a flyer, usually the first shot. Tyler Krenzel, While the AR-10 has been around for decades, there, *Competitive Shooter of the Week* The distinction means the round can fit into an AR magazine, an AR upper built for the .300 Blackout, and an AR lower. 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. Good follow up to your other posts on 300 black. For 5.56 NATO, that point is 20 of barrel. Plus higher velocity typically requires less hold over. 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.. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. It is ear safe with subs and damn near it with supersonics. The 6.5 Grendel is a lower to mid-power 26 caliber cartridge. The 300 AAC Blackout definitely works for hunters who want to use their AR15-platform rifle. The 300 Blackouts recoil is not significantly different from the 5.5645, and its price isnt prohibitively higher. A buddy has a 100yd range in his back yard. Burn rates mean more than amount of powder in your cartridge. As for waiting on Sig Suppressors good luck with that. This is actually much tighter twist required to stabilize the short 124gn. 300 BLK by AAC: An Introduction by Paul Erhardt. Keep reading to discover the best barrel length for .300 Blackout for different shooting scenarios. 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. Easy Conversion: Use your current AR lower, bolt/carrier, buffer, and magazine. Maybe not so much that the longer barrel is directly responsible for greater accuracy, but indirectly? Thats 8 inches of barrel for the 300 BLK 1-8. 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. Some folks wonder why consider a 300 BLK? The 300 Blackout would never see mainstream military use, although it became popular in the civilian shooter market. _gaq.push(['_trackPageview']); ps.the arm brace apparently was deemed legal by ATF for incidental resting on your shoulder. 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. However, heat build up effects point of impact. My friend bought a 300 Blackout upper from PSA and put a can on it. Then you can also pick a slightly faster burning powder to get a complete burn in 16 of barrel. However, if you want a .300 Blackout barrel that can deliver sufficient power, accuracy, and maneuverability to serve you in various scenarios, go for a 9 to 10-inch barrel. We stand behind all our products and were here to support you. Sign up for our newsletter to receive updates and exclusive offers, Copyright 2023- Ballistic Advantage - All Rights Reserved. .300 Blackout ammo can be loud, especially when shooting supersonic rounds. Shorter barrels do not result in less accuracy. 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. Hornadys American-Made Ammo Cabinets Keep Your Gun Food Secure. 300 AAC Blackout Ammo Review Dennis, running 7.6239 in an AR has a whole bunch of issues on its own. A longer barrel, because of its increased surface area, provides more room for cooling in instances where you shoot continuously. There have been a number of Kabooms recorded from 300 BLK rounds fired in a .223 Rem/5.5645 chamber. The .300 Blackout also comes in a supersonic variant, which means once fired, the bullet travels faster than the sound barrier. Survival AR-7 Rifle, http://blog.silencershop.com/300-blk-impressions/. I was understanding that my 5.56 with 55 grain bullet needed a twist of 1:7 to be right. But there you have it. I dont think you can get there in 9 inches with full-size powder loads regardless of how fast-burning they are. Lighter, 125gn bullets wont care, but long, slow bullets need FAST spin-rates. 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.
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