The ATI company gives that to us. 300 AAC Blackout rounds shot from a suppressed M4 carbine. This time, for 300 Blackout bullets, we’ll have a peek at the strongest bolt action weapon currently on the market. More and more firearm manufacturers are chambering factory bolt-action rifles in the .300 BLK. Needless to say I had a flinching problem for years!!! Of course, the downside to the bolt-action platform is it simply can’t send as many rounds downrange as quickly, and there are absolutely many situations where the sloth-like speed of a bolt gun is a burden. Of course even then the 300 has a lot more punch than any 22LR. The shooter did not have to hit the forward assist or force anything into place, the 300 BLK round simply cycled into the chamber. But my papaw sure got a good laugh!!! A BCG helps to make your firing and reloading process go smoothly and makes your entire rifle less likely to jam or glitch. The short-action Remington 700-based rifle used an 18-inch No. Read: Review: Gear Head Works One 300 BLK Bolt Action Pistol from Steven Kuo on March 19, 2019 for Recoil. 300 H&H Mag. When he was firing the rifle, the 300 BLK round chambered, fired and the gun detonated. So I'm gonna buy one! The bolt action of the Model Seven is a shorter version of the Remington 700 action, and it’s built for AAC by Remington to AAC’s specifications. With subsonic cartridges, the 300 BLK produces a low sound signature when suppressed, and the development of 100- to 150-grain full-speed ammunition matches the ballistics of … Check your local laws and regulations on ownership guidelines. Like the Lancer 300 BLK mags, the internal geometry of the 300 BLK PMAG is optimized for 300 Blackout. The .300 BLK is a superb police sniper cartridge choice because it can be every bit as accurate as a sniper needs while not overpenetrating, and you can carry the same caliber of ammunition for your primary and secondary rifles, albeit snipers may want a different flavor bullet. Similar to its AR/M4 brothers, the Sisk rifle had plenty of Picatinny rail space for any gadget an AR/M4 operator wants while adding a few tactically-superior advantages over your garden variety bolt action rifle like a fully-adjustable, all-aluminum stock and fully-rotating hand guard to give operators every bit of mechanical flexibility possible. Raise the bolt handle, pull the bolt handle all the way back, push the bolt stop release in the top of the trigger guard, and slide the bolt assembly out of the firearm. .300 BLK Firearms Initially developed for tactical applications, the .300 BLK cartridge has also proven itself as both a self-defense and hunting cartridge. Now we are shifting our thoughts back on the rifles themselves. Still, even a 2-MOA 300 BLK gun will put down hogs and steel just fine, and it can take some experimentation to identify loads that work particularly well in your gun. However, the main design requirement was that the 300 BLK would be useable in the AR-15 using standard magazines. 308 Norma Mag. magazines. .300 AAC Blackout (300 AAC ブラックアウト、SAAMI 表記 300 BLK、 CIP 表記 300 AAC Blackout )は、 Advanced Armament Corporation (AAC)によって開発された 中間弾薬 。 7.62×35mm とも呼ばれる。� Oh, there’s one more benefit. 5 Best.300 Blackout Bolt Carrier Groups (BCG) It is no easy job to find the right BCG for a.300 Blackout. Ruger RIFLE RANCH .300 Black 16 Flat Dark Earth 10RD AR. I had the opportunity to shoot a custom-built .300 BLK rifle manufactured by Sisk Rifles in Dayton, TX. The 4 Best .300 AAC Blackout Rifle in 2020 Reviews. The one problem that had everybody stumped was how to get a bullet to expand at subsonic velocity. No changes are needed to the lower receiver or even magazine. The reason being is that there are a ton of them flooding the market. The light, compact rifle gets the most performance from 300 Blackout thanks to its 16 1/8-inch heavy barrel with threaded muzzle for use with a suppressor or muzzle brake. And speaking of ‘punch’, if you are seriously considering to get a bolt gun (or AR for that matter) in 300 BLK, you may want to get a copy of the September 2016 For the same reason, the magazines are interchangeable too. For example, it wasn’t as accurate as heavier rou… Besides that, if you are into mid-long range shooting, this BCG would be your best friend in preventing jamming shots. If you want, you can switch out only the barrel since the bolt will stay the same. The shooter had a mix of 5.56mm and 300 BLK ammo present. When buying a 300 Blackout upper, you want it to include a bolt-carrier group and charging handle, a free-floating handguard, and a barrel that’s between 7 and 12 inches long. OUT OF STOCK (0) DIA DB15E300BCA DB15 .300 BLK RAIL*CA*BLK OUT ... CZ-USA CZ 527 American Bolt .300 Black (7.62x35mm) 16.5 5+1 Sy. It tried to beat the Soviet 7.62×39 mm, and it was successful in terms of the usable range and penetrative characteristics. Rounds such as the 6.8 SPC and 6.5 Grendel had similar parts-interchangeability issues but did allow for the use of the standard M4/M16 30-round magazine, albeit with a reduced capacity. 30 Caliber.310” Diameter. Clearly, the bolt gun platform doesn’t inhibit the .300 BLK, so the question becomes why use a bolt gun over an AR platform in the first place? Operating a bolt gun is a much quieter process than the semi-automatic AR. Actually this variant is their American Synthetic Suppressor-Ready Rifle series. 300 Win Mag. 300 BLK vs 5.56, Combat Ready AR-15 300 AAC BLK 10.5" Nitro-Met Quad Upper Assembly with Socom Style Brake -is a perfect addition to your AR-15 build. It’s a terrific hit-harder-than-a-5.56mm choice, but right next to it in your gunsafe ought to be another .300 BLK in a bolt gun for those missions when you need the .300 BLK to be just a bit faster, quieter, more accurate and absolutely, positively work. 461 Topics 5360 Posts Last post Re: Rem model 7 .260 rebarrel… by BobinNC Wed Jan 13, 2021 1:05 am Other 300 Blk Guns Moderators: gds, bakerjw, renegade. It features an X-Mark Pro trigger set at 3.5 pounds. Initially intended as a light and short weapon for close quarters use, .300 Blackout guns are perfect home defense or for duty use as a cruiser rifle. The rifle features a top-tang safety, a 1-piece aluminum scope rail, an adjustable trigger and a 10+1 magazine capacity. 8mm Rem Mag . And speaking of ‘punch’, if you are seriously considering to get a bolt gun (or AR for that matter) in 300 BLK, you may want to get a copy of the September 2016 Dillon Blue Press catalog and check out the 7.62x40 WT (pg 44), especially if you don’t mind forming brass. 7.62x39. Great budget option; Easy upgrade to an AR-15 Pistol; Cons. All of the bolt carrier Reply. The explanation is that the business is saturated with a lot of them. 308 Win. 308 Mar Exp. Most folks might say the genius of the.300 BLK is its adaptability to the M4/AR-15 platform, and from a practical standpoint this is certainly true. Our Team Said: The Remington SPS-T is a fine-shooting firearm in 300 BLK. Your bolt carry group, or BCG, is critical to your. 300 BLK was a way to achieve similar ballistics as the .308- with the least modifications to your 5.56. Since the cartridge base is identical, the bolt and bolt carrier are unchanged. Compare this Product. In stock. We have also balanced input from our consumers and military end users in order to … 300 Blackout rifle shooting experience. 165 Topics 1869 Posts Last post Re: Need help with 330 blk AR … by dowser Wed Feb 10, 2021 2:03 pm Accessories Moderators: gds, bakerjw, renegade. An upper receiver chambered in .300 BLK delivers a cartridge ballistically different than the typical .22 caliber (5.56mm/.223 Rem) bullet can provide, yet it is highly cost-effective because it uses the same bolt carrier group and magazine as the base 5.56/.223 chambered rifle, assuming it retains the correct headspace dimensions. Let’s run down the features and see if we can’t figure it out. The metric designation is 7.62x35mm. A popular type is the 5.56 bolt carrier group, which also works as a 5.56 .223 bolt carrier group. Wish List … 30-06 Sprg Ack Imp. The .300 Blackout became a behemoth in the industry because of its direct compatibility with existing AR-15 rifles since it is compatible with almost every standard 5.56/223 AR 15 part. In terms of versatility, the Anderson Manufacturing – M16 5.56 BCG would perform flawlessly with most.300 Blackout rifles on the market. Best .300 Blackout Rifle with Bolt Action. The Anderson Manufacturing – M16 5.56 BCG is a drop-in BCG. AR-15 300 AAC blackout 16" stainless steel straight fluted tactical upper assembly. 300 Sav. The SAINT® Victor Pistol .300 BLK combines the unparalleled versatility of the .300 BLK .30-caliber cartridge with custom features like an M-Lok® compatible free-float aluminum forend and nickel boron-coated single-stage flat target trigger. could deliver, the .300 BLK—an unofficial answer to the Russian 7.62x39 mm cartridge—enabled M4/AR users an easy upgrade in downrange lead. The rifle is a short, lightweight design intended for some serious field expeditions as well as target shooting. Requires a "Pistol" Lower ; 250 at Palmetto State Armory. The Ruger American .300 AAC Blackout Bolt-Action Rifle is designed with a synthetic stock and a threaded barrel. 300 Rem SA Ultra Mag. 8mm Caliber.323” Diameter. ), also known as 7.62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. That bolt is going to cycle so long as the operator can and that leads us to the second, arguably most important advantage of the bolt gun and that is stealth. 300 BLK (left) vs. 5.56 NATO (Right) Like the .224 Valkyrie and 6.5 Grendel, a standard AR-15 lower will work just fine with .300 Blackout, provided the bolt … 2 contour Lilja barrel wrapped in Sisk’s unique Sisk Tactical Adjustable Rifle (STAR) stock. He expects them to provide better precision, which we like to see in a custom bolt gun. He also does an excellent job of illustrating the problems 300 BLK can have when used in 5.56 mags. 30-378 Wby Mag. advanced-armament.com; 770-925-9988) Bushmaster AAC 300 Blackout. No special bolts or magazines to buy to get into a new caliber! If you’re pressed on time, here’s a quick list of the best 300 blackout rifles: Springfield Armory Saint: Best Overall .300 AAC Blackout IWI Tavor X95: Best for CQB Wilson Combat AR-15 Ranger: Best .300 Blackout Rifle for Hunting; Daniel Defense DDM4 V7P 300 Blackout: Best for Home Defense SIG’s highly unusual 300 BLK V-Crown bullet features a polymer tip to initiate expansion, a two-stage ogive to aid feeding and reliable expansion at subsonic velocities. 300 Wby Mag. Prior to building a custom bolt action rifle in 300 BLK I did a lot of homework on loads and load development. Having some fun with suppressors and the 7.62X35 220 grain 300 AAC Blackout. There are simply fewer moving parts and the only gas your bolt-gun needs to operate is the oxygen its operator breathes to work the bolt. One of the advantages to the Sisk rifle is portability, not something normally attributed to bolt-action rifles. 300 WSM. I know people won’t like this but its really a 150 yards and in cartridge same Women On Target® Instructional Shooting Clinics, Volunteer At The Great American Outdoor Show, Marion P. Hammer Women Of Distinction Award, Women's Wildlife Management / Conservation Scholarship, National Youth Shooting Sports Ambassadors, NRA Outstanding Achievement Youth Award Presented by Brownells, National Youth Shooting Sports Cooperative Program, 7 Best New Cartridges for Long-Range Precision, The Best Personal Defense Strategies for Civil Unrest, How to Adjust Your Rifle Setup for Body Armor, First Look: OSS RAD 9 & RAD 45 Pistol Suppressors, First Look: Browning McMillan Pro & Long Range Rifles, © 2021 National Rifle Association of America. It guides the next round from the magazine and into the chamber, which ensures the round is … The 300 Blackout is a specialty round, delivering similar ballistics to the 7.62×39. newsletter for at-a-glance access to industry news, gear, gun reviews, videos and more—delivered directly to your Inbox. A BCG helps to make your firing and reloading process go smoothly and makes your entire rifle less likely to jam or glitch.It guides the next round from the magazine and into the chamber, which ensures the round is placed perfectly. The other benefit of a .300-BLK, bolt-action platform like the Howa MiniAction is for new shooters, who may be both sound- and recoil-averse. OUT OF STOCK (8) Diamondback Firearms Burnt Bronze DB15 12 M-Lok Semi-Automatic OUT OF STOCK (1) POF-USA 01463 RENEGADE PLUS B-BRONZ 10 9 M-LOK .300 Black . The .300 Blackout cartridge has a very similar performance to the 7.62×39 round in a cartridge that works perfectly with the standard AR-15 bolts, magazines and lowers. Modified bolts were also needed owing to its larger case head diameter. But …. Add to Wish List. Grey Ghost Precision Dagger Brings 300 AAC Blackout to the Bolt Gun Three-hundred AAC in a bolt gun. 332 Topics 3150 Posts … An advantage - and danger - of the .300 BLK cartridge is interchangeability with 5.56 NATO/.223 Rem. The AR-length cartridge chambered in … All you need is a bigger diameter barrel. These 5.56 / 300 BLK Bolt Carrier Groups are Melonited, Full-Auto rated, are properly staked, and the bolts are Matched to the barrel. 30 TC. While the 300 BLK is commonly encountered in AR-15/M16 M4 type rifles, bolt actions rifles are offered from a number of manufactures. If it was in a bolt action people wouldn’t even consider it, its no were near a 30-30 which shoots a 160 grain bullet faster than the 300 blk shoots a 120. Like the .224 Valkyrie and 6.5 Grendel, a standard AR-15 lower will work just fine with .300 Blackout, provided the bolt and barrel are correct for the new caliber. CHECK LATEST PRICE. 300 RCM. When it comes to buying a 300 BLK platform, you can choose from full-spectrum of AR-style beauties, from bolt-action and rugged break-action rifles to single shot pistols. At the end of the day I’m certainly not advocating you toss your .300 BLK AR in the trash. I found some commercial manufactures (mostly off the record) either discontinued bolt guns in 300 BLK, pulled them from the market after the product was announced, or declined to introduce them due to accuracy and feeding concerns. 8mm (8x57) 8mm-06. You can easily convert any standard 5.56 AR-15 to a .300 Blackout by merely changing the barrel. Using 300 Blackout is quite simple, all you need to do is change a new barrel - Via ammoland.com. 30-06 Sprg. Bolts, Bolt Carriers & BCGs; BCG Receiver Combos; Lower Receivers; Upper Receivers; Parts and Accessories. Our Rosco Melonited Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements. 7.62x51mm NATO. However, it had some problems of its own.Namely, it’s very hard to create a round that is good for everything, and the 5.56 NATO does fail on some points. The 5.56 NATO round was developed in the 1960s since very light, and fast bullets were all the rage back then. AAC officially designated it as the 300 AAC Blackout, or the 300 BLK. CALIBER: 300 Blackout BARREL: 8.0 , 1:7 twist, medium taper, 4140CM, SBN, .750 SLR Adjustable Gas Block MUZZLE: DefCan 3 Flash Hider, Threaded 5/8-24 GAS PORT LOCATION: Pistol Length RECEIVER: Forged 7075-T6 AL M4 type upper, AR15 type lower HAND GUARD: CMMG RML7 M-Lok hand guard FINISH: Cerakote Standard CHARGING HANDLE: CMMG Oversized Ambi PISTOL … The 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. Additionally, it doesn’t suffer nearly as big of a drop off in performance as the 7.62×39 when using a shorter barrel either. The bolt gun has several inherent advantages over the semi-automatic platform that when combined with the .300 BLK give users plenty of reason to make sure their battery of firearms includes a rifle inspired more by Mauser than Stoner even when chambered in the .300 BLK. In this post, I’ll be building a custom precision rifle chambered in 300 BLK. 300BLK弾 - MEDIAGUN DATABASE 300 BLK (.300 AAC Blackout)弾 † 2010年にAACが レミントン・ディフェンス 社の協力のもとで開発した弾薬。� メートル表記では7.62x35mm。� In fact, even in the seemingly pedestrian bolt-gun configuration, the squatty, pistol-powder-packed cartridge delivers on all of its better-than-a-5.56 mm campaign promises like being quieter than a 5.56 mm suppressed, delivering more oomph, and by virtue of its vastly bigger mass, doing more damage. The three best 300 Blackout uppers are the Radian Weapons Model 1, Noveske Gen lll Shorty, and the BCM MCMR-8. The first time I shot a rifle, other than 22, I was about 8 and it was a 30-06. Whoever said it doesn't is full of BS. Let’s run down the features and see if we can’t figure it out. Most folks might say the genius of the .300 BLK is its adaptability to the M4/AR-15 platform, and from a practical standpoint this is certainly true. … Wednesday, April 18, 2018. First created as ballistic nourishment for AR/M4 operators who wanted more persuasion than the 5.56 NATO/.223 Rem. Just drop an upper on your standard mil-spec AR-15 lower, and .. This includes magazines, bolt carrier groups, upper and lower receivers, rails, buffers, buffer assemblies, stocks, etc. Get It. Most are cheap and low-quality, making it difficult to find a good one that fits a rifle perfectly. 325 WSM. As you can see, the.300 BLK stands as a robust defense cartridge in supersonic trim, and when sporting a well-engineered expanding bullet, is brutal on varmints and quite adequate on … If you really want to see your .300 BLK shine, quit changing your AR’s furniture and change your platform instead—to a bolt-action rifle. Do we need the accuracy of a bolt gun when 300 BLK is more of a 300 yards-and-in punch in the solar plexus The 300 BLK is designed specifically for use in a semi-automatic magazine-fed gun, so what is it doing here in bolt action land? Let’s run down the features and see if we can’t figure it out. E-mail your comments/questions about this site to:ShootingIllustrated@nrahq.orgFor questions/comments about Shooting Illustrated magazine, please e-mail:Publications@nrahq.orgYou can contact the NRA via phone at: NRA Member Programs1-800-672-3888, To advertise on Shooting Illustrated, visit nramediakit.com for more information. 300 Blk. .300 AAC Blackout (300 AAC ブラックアウト、SAAMI [1] 表記300 BLK、CIP [2] 表記300 AAC Blackout)は、 Advanced Armament Corporation (AAC)によって開発された中間弾薬。 7.62×35mmとも呼ばれる。標準のSTANAGマガジンに5.56mmNATO弾と同じ装弾数を確保した上で 7.62×39 mm弾や7.92×33 mm Kurz弾に近い威力を実現する高速弾と、サプレッサー使用時に高い静音性を実現する亜音速弾の二種をコンセプトとして開発された。 300 BLKの弾薬は7.62×40 mm Wilson tacticalに対応したチャンバーを装備した銃では使用できない。 [3], 5.56×45mm NATOは軍事の世界で広く受け入れられてきたが、一部の特殊部隊が遭遇する任務の性質上、高エネルギーかつ高弾速の弾薬よりも静音性に優れる亜音速弾薬が必要とされ、9mm弾とサプレッサー付きの銃器(多くはSMG)を装備する場合がある[4]。, この需要を満たすために、AACはRemington Defenseと協力して300 AACブラックアウトを開発した。この新しい銃弾は、大口径弾薬に劣るM4の特性を解決することを目的としていた。コルト・ファイヤアームズや他の武器メーカーも同様に以前からさまざまな新弾薬をARライフルやカービン銃向けに開発・製造していたが、様々な問題が発生した。特に7.62×39mmを使用するAR-15クローンなどは、特別に改造されたAK-47マガジンを使用しないと、マガジン内で弾丸が傾斜するため給弾不良が発生した。[要出典]また、弾薬の直径が5.56×45mm NATOより大きいため7.62×39mm専用に改造されたボルトを装備する必要もあった。6.8 SPCや6.5 Grendelなどの弾薬でも同様にボルト交換が必要だったが、標準のSTANAGマガジンを共用可能だった(ただし薬莢のサイズから、30発用マガジンでも25〜28発しか装填できない)[5]。, .300 Whisperシリーズなどのワイルドキャット弾はこれらの問題を解決したものの、単発拳銃で広く使われる物で、業界標準の銃弾寸法が欠如しており超音速と亜音速の規格双方で、ARタイプの銃への負荷が理想的ではなかった。また、これらの弾薬の多くは、M4カービンのチャンバーの圧力要件に適合しない粉末装薬を使用しており、STANAGマガジンへの装弾ができないように銃弾の全長が長くされていた。さらに、亜音速の弾薬をサプレッサーと組み合わせて運用すると、ベトナムでのM16の最初期のモデルで見られたものと同様に、ボルトのストロークが短くなり過度の汚れが顕著に発生した[6]。, 開発時にM4 / M16を主に使用する銃として念頭に置いたことで、設計者は、弾道要件を満たすだけでなく、銃自体への改造を最小限に抑え、バレルの交換だけで弾薬を使用できるように設計した[7]。, AACの研究開発ディレクターであるRobert Silversは、次のように述べている。「私たちは2009年に開発を始め、ほとんどの開発作業は2010年に行われました。ある軍の顧客は、通常のボルトやマガジンを使用しつつ、標準マガジンの装弾数30発のまま.30口径弾をM4プラットフォームから射撃可能にする方法を求めており、彼らは要求スペックに適合する弾薬の情報を望んでいました。RemingtonはSAAMIの会社であるため、.300-.221や.300 Whisperを使用することはできませんでした。そこで私たちは、.300-221からワイルドキャットの概念を取り去り、.300-221に対する最終仕様を決定し、SAAMIに提出しなければなりませんでした。そして私たちは策定した最終仕様の弾薬を.300 AACブラックアウト(.300 BLK)と呼ぶ事にしました。」[8], その後300 AAC Blackoutは、2011年1月17日にSAAMIによって規格として承認された。, 2011年10月23日、USAMU所属のSSGダニエルホーナーは300 AAC Blackoutを使用し第四回のUSPSA マルチガンナショナルチャンピオンシップで優勝した[9]。, 現在軍による大規模な採用はされていないが、特定の特殊作戦部隊が使用している。[要出典], 2015年7月、オランダ国防総省機関は、オランダ海上特殊作戦部隊(NL-MARSOF)向けに195丁の300 BLK対応チャンバーを装備したカービンへの入札を発表した。その目的は亜音速弾および無鉛フランジブル弾を購入することであり、.300 AACブラックアウトが正式に軍事採用された初の事例であった[10]。2016年12月、NL-MARSOFは、耐衝撃バイザーヘルメット用に開発された新型折りたたみ式ストックを装着した195丁のSIG MCXカービンを配備し、軍用で制式採用した初のユーザーとなった[11][12]。, 2017年7月14日、英国国防総省は5年間(オプションで5年間)での契約を締結し、.300ブラックアウトの超音速および亜音速弾の供給を開始した。すでに弾薬が使用されていたということも注目された[13]。, 2017年3月現在米国特殊作戦司令部(SOCOM)は、5.56から.300 AACまで対応するコンバージョンキットの提案を防衛業界に要求しており、より広い特殊作戦群へ向けて利用可能にしたいと関心を強調している。現在、.300 AACは、主にJSOC内、特定の特殊作戦部隊内で限定的に採用されている。, 125グレイン超音速カートリッジによる最大推定有効射程は460メートル(503ヤード)。 220グレイン亜音速カートリッジの有効射程は200メートル(219ヤード)[要出典]。, 300 AACブラックアウトは、 AR-15で7.62×39 mmと同様のエネルギーを達成しながら、標準のARマガジンを最大の装弾数で使用できるように設計されている。7.62×39 mm弾のテーパーはARマガジンにおける供給の信頼性を落とすと共に、ボルトに摩耗を引き起こした。14.5インチ (370 mm)M4 Carbineの14.5インチ(370mm)バレルから放たれたM855 5.56×45弾の有効射程は500メートル。弾丸はその距離でかなりの弾道降下と偏流をし、運動エネルギーを失う。それに対して16インチ (410 mm)バレルから放たれた125grain (8.1 g)300 BLKラウンドは、より初速が低く、より大きな弾丸の落下と偏流が発生する。しかし、M855が500メートルで持っているエネルギー量と同じエネルギーを700メートルの時点で.300ACCブラックアウトは保持している。命中確率の観点からは、.300ACCブラックアウトは460メートルの有効範囲を持っている。9インチ (230 mm)バレルから放たれた125 gr BLKラウンドはM4からM855と同じ銃口エネルギー、そして440メートルで5パーセント以上のエネルギーを持っている。7.62×39mmの銃弾と比較して、荷重を変えた300 BLKの砲弾は、同じ長さの砲身から弾道係数とエネルギーが向上している。Barnes TAC 110グレインのような300 BLKラウンドは、「バリアブラインド」性能を持ち、数インチの硬いターゲットを貫通することができる。.300 BLKを使用すると、ユーザーは1丁の銃で、亜音速、超音速、V-MAX弾、またはバリアブラインド弾のいずれかを弾倉を交換するだけで切り替えることができる。接近戦用にH&K MP5を交換することができ、マガジンを更新するだけで、M4カービンを凌駕して戦いをより長距離化することができる。[要出典].30口径の銃弾は、5.56×45mmの弾頭弾頭面積が89.1パーセント増加しているため、柔らかいターゲットに、より大きな創傷と永久空洞を残す。また、より深く貫通し、そして最初はより速く揺れる。300 BLKラウンドは4.5インチ (110 mm)の短いバレルから有効である。9×19mm MP5、5.7x28mmの FNのP90、4.6×30mm MP7のようなサブマシンガンと同等の軽さ、コンパクトさ、静粛性を持ちながら、より長いレンジでより高いエネルギーと精度を持つことができる[14][15]。, 5.56 NATOよりもストッピングパワーを高めた6.8×43 mm特殊用途弾と比較して、300ブラックアウトはさまざまな機能を備えている。300 BLKは、7.62×39 mmと同等以上のエネルギーを持ち、サプレッサーとの併用を前提に、特定の短距離にフォーカスして設計されている。初期の6.8 SPCは、5.56×45 mmよりも全範囲でより多くのエネルギーを持つように設計された。それは飛距離で性能を維持する高速の比較的小さな発射体を持っている。200ヤード (183 m)、300 BLKが2インチ (51 mm)滴それが30インチ (760 mm)落とす間、 6.8 SPCより低い500ヤード (457 m)より低い115grain (7.5 g)6.8ラウンドのマズルエネルギーは1,694フィート重量ポンド (2,297 J)そのより速い速度のため、125grain (8.1 g)300 BLKラウンドのマズルエネルギーは1,360フィート重量ポンド (1,840 J)両方の弾丸は、対応弾薬を換装されたAR-15で使用されるために作られた。6.8 SPCは時代遅れの.30 Remington弾を中心に設計されているため、換装がより困難である。別のボルトが必要になり、標準マガジン容量が減少する。300 BLKは換装を容易にする目的で作られたので標準的なボルトでも動作し、マガジンを通常の装弾数で使うことができ、必要なパーツの交換はバレルのみである[16]。, 300 BLKの非常に有利な点(一般的な.223 / 5.56口径との類似性)も、2つの弾薬が混在している場合は問題になる可能性がある。2つの弾薬はチャンバーの寸法がほぼ同一なため、SAAMIは.223(5.56×45)チャンバーで300 BLK弾を使用してしまう組み合わせを危険と見なしている[3]。300 BLKの弾頭は.223口径(5.56×45)よりも大きいため、誤って発射した場合弾頭とガスの行き場がなくなり過度の圧力がバレルと銃内部に発生しライフル自体が爆発し負傷や死に至る可能性がある。両弾薬は非常に混同しやすいため、両方の弾薬に対応した銃器の所有者は、銃とマガジンを明確にマーキングし、マガジンを装填する際は毎回目視で確認することによって、銃とそれぞれの弾薬を慎重に分けて管理することを勧めている[17]。300 BLK弾が実際に.223バレルに収まるかどうかは、弾丸の長さと形状、弾丸の圧入の深さ、ネックの圧着、および装薬の量によって異なる。理想的には、銃弾はより長い弾頭を使用し、薬莢に既定量の装薬を充填し、発射体を所定の位置にクリンプ加工する。, 300 AACブラックアウトは、SAAMIによって標準化された.300-221である。Hornadyは、300 AAC Blackoutを使用するライフルであれば300 AAC Blackoutスペック内で作られる.300 Whisper弾薬を撃つことができると主張している。これら2つの銃弾のリロードダイは、多くの場合同じである[8]。, American National Standard Voluntary Industry Performance Standards for Pressure and Velocity of Centerfire Rifle Ammunition for the Use of Commercial Manufacturers, Technical Data Sheet - Unsafe Firearm Ammunition Combinations, https://books.google.com/books?id=OoBq0qlNwcwC&pg=PA114, “Shades of Gray: .300 Whisper & .300 AAC Blackout”, https://www.americanrifleman.org/articles/2012/11/5/shades-of-gray-300-whisper-300-aac-blackout/, USAMU's Horner takes the gold with 300BLK, “Dutch special forces to buy carbines chambered in 300 BLK”, http://www.janes.com/article/52727/dutch-special-forces-to-buy-carbines-chambered-in-300-blk, SIG MCX rifles delivered to Dutch special forces, Dutch MARSOF officially purchase .300 BLK SIG MCX Rifles, Prior information notice for contracts in the field of defence and security supplies, https://books.google.com/books?id=bjhy8uv196IC&pg=PA55, https://ja.wikipedia.org/w/index.php?title=.300_AAC_Blackout&oldid=81082195, 1960年代後半のEglin空軍基地のUSAF Armament Labによる先駆的な研究では、172グレインの弾頭を発射する7.62×28mmの弾を製造した。  発射体を1,050 ft/s (320 m/s)にさせることはできたが、さまざまな信頼性の問題を抱えていた, さらに最近では、.300-221、300 Fireball、およびJD Jones独自のバージョンの.300 Whisperなどの人気の高い. 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