300 blk velocity barrel length

The 16 inch barrel data are used here, for all cartridges, because 16 inches is the most prevalent barrel length for AR-15 rifles. Here are the velocity in feet-per-second (fps) and energy in foot-pounds (ft. lbs.) figures for our comparison loads at the muzzle, 100, 200 and 250 yards. The loads are listed in descending order of their MV.

Quoted: For 110 grain Barnes in a 8.5 inch barrel I have seen different velocities, usually falling in somewhere around 2100-2150. Wilson combat has the Hottest advertised velocity of 2400, that should net about 2200 from a 8.5. A 10.5 inch will get you about 100 fps more then a 8.5 with the same round.300 Blackout 110 gr V-MAX® Hornady BLACK ® Item #80873 | 20/Box . Hornady BLACK ® ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Loaded with legendary Hornady ® bullets, Hornady BLACK ® ammunition is designed to fit, feed and function in a variety of platforms. Find a RetailerBlackRock's boss says that active managers increasingly use passive investment products. Human fund managers haven’t gotten much love lately. They often fail to beat broad market i...The formula for finding the acceleration of a bullet is A = v^2/2l, or velocity squared divided by two times the barrel length. Velocity means muzzle velocity, or the speed at whic...Twist: 1:5 twist for the 7″ barrel, 1:6 twist for the 16″ barrel. Assembly Weight : .97 lbs (7″), 1.8 lbs (16″) Muzzle Thread: 5/8-24. First, I want to reiterate that the .300 AAC Blackout ...

Aug 3, 2023 · 300 Blackout Effective Range For 9" Barrel. From a 9-inch barrel, the 300 AAC Blackout 125 grain bullet has a maximum effective range of 440 meters. This is because the bullet drops 100 inches at 410 meters, drifts 41 inches at 470 meters, and has 291 foot-pounds of energy at 625 meters. Most 9" 300 blackout barrels can achieve this performance ... Odin Works 300 BLK AR-15 Barrel 1:8 Pistol Length Medium Contour 16.1" w/Gas Block. View Details. $313.50 . In Stock . Odin Works 300 BLK AR-15 Barrel 1:8 Carbine Length Medium Contour 16.1" w/Gas Block. View Details. $313.50 . In Stock . Guntec USA 300 AAC Blackout Pistol Length AR-15 Barrel - 10.5"For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. 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 the longer range engagements with a suppressed 300 Blackout, use a 16 ...Due to the extremely short barrel length (5.5in), 5.56 NATO is going to lose much more velocity, and consequently maintain much less energy than a 300 Blackout chambered Rattler. Sig also offers the Rattler in a pistol variant, with ATF compliant braces, and SBR variants, if you want to pay for a tax stamp.The Bottom Line on 300 Blackout Ammo. The 300 Blackout is a rifle cartridge that’s more powerful than the 5.56 when fired out of a barrel that’s less than 16 inches long. The chief advantage of 300 Blackout is its versatility. You won’t find a cartridge that “does it all” better than the 300 Blackout.

I'm currently looking for a 300 blk barrel, but I am conflicted on the twist rate and length. I'm taking into account bullet grain weight and cost as well. I've seen on online cost of 300 blk and it's a small difference $19 dollars for lower grain cartridges and $25 for higher grain cartridges (box of 25), but in all a difference for my wallet.NOTE: At 10:47 - the LWRCI DI rifle is NOT suppressed.Looking for a product featured in this video? YouTube prevents us from posting links. Head over to our ...NOTE: At 10:47 - the LWRCI DI rifle is NOT suppressed.Looking for a product featured in this video? YouTube prevents us from posting links. Head over to our ...Mar 10, 2023 · Popular barrel lengths for .300 Blackout range from 16 inches to 5.5 inches. The use cases of these two barrel lengths are very different. But they’re both fairly common among shooters, which speaks to the versatility of the Blackout. The best barrel length for a suppressed 300 Blackout is between 8 to 10 inches. At 10", the muzzle velocity hasn't reached its peak yet. Heavy subsonic 300 Blackout ammo in a 10" barrel may have lower velocities, but it allows for the use of a suppressor without damaging your hearing. Supersonic ammo out of a 10" barrel retains rifle caliber ...

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Best Barrel Length For .300 Blackout For Subsonic Loads. Based on the data above, it appears that for subsonic loads such as 220 grain (where the .300 BLK really shines), barrel length can be an afterthought, particularly if you plan on using a suppressor. …Designed for 300 BLK; SAAMI Max OAL: 2.260″ Maximum Velocity: 1300 FPS; Test Rifle. For the testing performed as a part of putting this article together, I used the following AR-15 rifle configuration: Anderson Manufacturing AR-15 300 Blackout Upper: 16″ Carbine length barrel, 1:8 twist; Carbine length gas setupIn physics, the three types of acceleration are changes in speed, direction and both simultaneously. The word “velocity” is often used in place of speed. A person can calculate the...BCM® 300 Blackout Barrels. Continuous taper designed for optimal weight, balance, and performance. ... Caliber: 300 Blackout; Length: 12.5″ ... extraction, and reliability. It increases velocity, and also resist against fouling and corrosion from extended use in the field. This gives the end user a longer barrel life with less required time ...For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8-10 inches. Attaching a 6-inch suppressor to this barrel length results in a total length of 14 to 16 inches, which provides optimal muzzle velocity for accurate long-range shots. For the longer range engagements with a suppressed 300 Blackout, use a 16 ...300 BLK: Barrel Length: 16" Manuf. Process: Cold Hammer Forged: Twist Rate: 1:8: Muzzle Thread: 5 ⁄ 8 × 24 TPI (Threads Per Inch) ... GunTec handguard, Daniel Defense, .300 AAC Blackout, 16", strength-to-weight. Lower is a Seekins, with a Velocity 3-pound trigger. Optic is a straight 4X Leupold. Handloaded ammo is a 110 grain, Hornady VMax ...

My 9 inch barrel and barnes tac-tx handloads leave the barrel at about 2150 fps. The minimum stated expansion velocity is 1300 fps. They are still well above that at 200 yards, ~1680fps. With AR scope height of 2.75 inches that …My 9 inch barrel and barnes tac-tx handloads leave the barrel at about 2150 fps. The minimum stated expansion velocity is 1300 fps. They are still well above that at 200 yards, ~1680fps. With AR scope height of 2.75 inches that is 7 inches of drop at 200yds with a 100 yard zero.Overall I tend to prefer my 10” 300blk vs my 7.5” for the added rail space, increased velocity with supers and it’s much less picky with subs (increased dwell time). Reply reply. armada127. •. 8" personally one of the neat advantages of 300BLK imo is the ability to go shorter than 10". Reply reply.Case Trim: 1.358” Barrel Length: 16” Twist Rate: 1:8” Barrel: Krieger 300 AAC Blackout 300 AAC Blacout Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. ... Velocity (fps) Charge (grains) Velocity (fps) H110 16.5 1980 17.5 2150 120-grain TAC-TX BT 300 Blackout 110 gr V-MAX® Hornady BLACK ® Item #80873 | 20/Box . Hornady BLACK ® ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Loaded with legendary Hornady ® bullets, Hornady BLACK ® ammunition is designed to fit, feed and function in a variety of platforms. Find a Retailer People are dining in "quarantine greenhouses" and using items like pool noodles and bumper car tables to dine out in public. We live in a weird new world, my friends. As stay-at-ho...We would like to show you a description here but the site won’t allow us.NOTE: At 10:47 - the LWRCI DI rifle is NOT suppressed.Looking for a product featured in this video? YouTube prevents us from posting links. Head over to our ...On paper, a 160-grain 8.6 supersonic load out of a 16-inch barrel will deliver a muzzle velocity of 2,400 feet per second, according to ballistics testing by Faxon Firearms. And, with a 300-grain subsonic load, the muzzle velocity can get up to 1,024 fps. And Brittingham said it’s effective out to 300 yards.300 Blackout Full-Auto AR-15. The rifle used in this story is a “special custom” full-auto AR-15. Note: Ultimate Reloader is a Type 07 Firearms Manufacturer (FFL) and Class 2 SOT, otherwise this would be illegal. Some information about the rifle follows: Upper: Anderson Manufacturing AR-15 300 Blackout Upper: 16″ Carbine length barrel, 1: ...

Best Barrel Length For Suppressed 300 Blackout. For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. 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 the longer range engagements ...

I’ve always stated my home-defense gun is a Mossberg 12 gauge loaded with 00 Buckshot, but the PDX offers more maneuverability than my Mossberg 500 and the power of 5.56mm, 7.62mm x 39mm, or a .300 BLK bullet. A gun like the Maxim Defense PDX is only 18.75" and can be chambered in the same caliber as any other AR at twice …Rain barrels are a great way to save and store water for use on your lawn or garden. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show L...gunmade ... Loading...Edit: I assumed you were talking about velocity differences since you were asking about barrel length. It is well know that a faster twist rate will potentially stabilize heavier bullets better but FWIW, I’ve shot a variety of bullets 110-220 gn with 1:8 and 1:7 and never had stability issues - barrel length has been a constant 10.5 thoThe 300 Blackout is essentially an intermediate, 30 caliber centerfire rifle cartridge. This 30 caliber cartridge, or 7.62X35mm, is a popular rifle round due to its effectiveness in AR-15s with a suppressor. The 300 BLK, as it’s sometimes called, got its start from the 300 Whisper (which was developed in the 1990s).The 300 Blackout cartridge yields increased performance in shorter barrels and effective subsonic performance. By speeding up the twist rate to 1:5 from common 300 BLK rates of 1:7 and 1:8, the Faxon 6" Match Series Gunner Barrel increases projectile stabilization and energy on target. Barrel Material: 416-R Stainless Steel.YouTube is now offering 15 50-minute episodes of classic TV shows including Star Trek, MacGyver, and Beverly Hills, 90210 with "prominent new ads." Coupled with YouTube's newly-lau...The 300 AAC (Advanced Armament Corporation) Blackout (designated 300 BLK by SAAMI) is a 7.82mm caliber designed to outperform in terminal ballistics over the 5.56 NATO/.223 Remington. It’s designed for the AR platform and delivers superb knock-down power in close-quarter battles. The 5.56 NATO still reigns supreme in the military, police, and ...1,377 ft⋅lbf (1,867 J) Test barrel length: 16 in. The .300 AAC Blackout (designated as the 300 BLK by the SAAMI [1] and 300 AAC Blackout by the C.I.P. [2] ), also known as … The 300 AAC (Advanced Armament Corporation) Blackout (designated 300 BLK by SAAMI) is a 7.82mm caliber designed to outperform in terminal ballistics over the 5.56 NATO/.223 Remington. It’s designed for the AR platform and delivers superb knock-down power in close-quarter battles. The 5.56 NATO still reigns supreme in the military, police, and ...

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Has anyone compared muzzle velocity between a 14.5 inch and 16 inch barrel? I want to use it for deer hunting and I wonder if the added 1.5 inches will help. I want to use the 135 grain sierra varmiter in the 300 blackout.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. Longer barrel …At the top of Vomero Hill in Naples, Italy sits Castel Sant'Elmo, a medieval fortress dating back to the 14th century that offers visitors majestic views of ... At the top of Vomer...Sep 28, 2023 · The 8.6 Blackout, also known as 8.6 BLK or 8.6mm Creedmoor, is the brainchild of the innovative team at Q LLC. Envisioned as the “big brother” to the 300 Blackout, the 8.6 BLK is to the AR-10 platform what the 300BLK has been for the AR-15. With its roots in the 6.5 Creedmoor parent case, the 8.6 BLK cartridge is trimmed and necked up to ... Case Trim: 1.358” Barrel Length: 16” Twist Rate: 1:8” Barrel: Krieger 300 AAC Blackout 300 AAC Blacout Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. ... Velocity (fps) Charge (grains) Velocity (fps) H110 16.5 1980 17.5 2150 120-grain TAC-TX BTRe: Ideal barrel length for 300 BLK subsonics Originally Posted by DJSticky My understanding is that, because the 300 BLK was designed around a 10.5 inch barrel, the velocity gained per inch over 10.5 is very minimal.Depends. For sub, yeah it’s close. That length is great for keeping subsonic projectiles subsonic for most barrels in that range and most subsonic rounds. Longer barrels with higher twist rates will speed up your bullet and approach that sound barrier limit. Also certain round weight will impact velocity (190 grain to 220 grain).For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. 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 the longer range engagements with a suppressed 300 Blackout, use a 16 ... ….

Stainless Lo-Pro Gas Block Barrel 300 Blackout. $ 320.00 – $ 470.00. BARREL LENGTH. Choose BARREL LENGTH 7.94" Diplomat 10.5" Shorty 12.5" Crusader 14.5" Afghan 16" Recon. HEADSPACED BOLT. Choose HEADSPACED BOLT Yes No Clear. Stainless Lo-Pro Gas Block Barrel 300 Blackout quantity. Add to cart.Notes: Only ammo tested to have all five rounds stay in the gel. Hornady Black Subsonic. Bullet Weight: 208 Grains. Bullet Type: A-Max Polymer Tip. Avg. Muzzle Velocity: 965 fps. Avg. Muzzle Energy: 468 ft/lbs. Bullet Drop at 50 yds: 0.7 inches. Bullet Drop at 100 yds: 8.78 inches. Energy at 100 yards: 442 ft/lbs.A: Barrel length plays a crucial role in determining the velocity, accuracy, and overall performance of a .300 Blackout round. Q: Does a shorter barrel length result in a decrease in velocity? A: Yes, generally, a shorter barrel may result in a slight decrease in velocity compared to longer barrel lengths.Feb 20, 2024 · While many of these barrel lengths are popular with alternative cartridges like .300 Blackout, 6.5 Grendel, or .350 Legend, those cartridges have different very different ballistics and sometimes benefit from other barrel lengths. All-Purpose Barrels: 16-inch & 14.5-inch. Far and away the most popular barrel length for an AR-15 is 16″. BARREL LENGTH : 5.5 inches . CALIBER : 5.56, 7.62x39, .300BLK. ... .300 BLK. 5.56 NATO. 7.62x39. Color: Configuration: Brace. Stock. Clear: PDX™ Kit quantity. Add to cart ... enough. Otherwise this thing hasn’t missed a beat. I was nervous because everyone told me not to go less than an 8” barrel and only in 300 blk. Well they were wrong.Nov 29, 2023 · The ideal barrel length when hunting with .300 Blackout is one able to reach long-range targets with sufficient bullet velocity and energy on target for a lethal impact. Longer barrel lengths offer greater accuracy and velocity, with a maximum length of 16″ for the .300 Blackout. The 300 AAC Blackout is unquestionably the most popular cartridge developed to increase the stopping power of the AR-15 carbine. It offers shooters the ability to shoot supersonic and subsonic rounds and experience a full powder burn in only 9 inches of barrel length. But what really sets the 300 Blackout apart from many other rounds is how ...From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace with precision PTG gauges. Barrel Material: 4150 CMV. Barrel Type: Button Rifled. Barrel Caliber: 300 BLK. Barrel Twist: 1:8. Barrel Length: 10.5”. Barrel Profile: GUNNER. 300 blk velocity barrel length, gunmade ... Loading..., 300 Blackout Effective Range For 9" Barrel. From a 9-inch barrel, the 300 AAC Blackout 125 grain bullet has a maximum effective range of 440 meters. This is because the bullet drops 100 inches at 410 meters, drifts 41 inches at 470 meters, and has 291 foot-pounds of energy at 625 meters. Most 9" 300 blackout barrels can achieve this …, Effective Range Factors. The maximum effective range of 300 BLK ammo depends on several interrelated factors: Ammunition: Bullet weight and resulting muzzle velocity determine trajectory and energy on target. Barrel Length: Longer barrels enable faster muzzle velocities, flatter trajectories, less bullet drop, and extended range. Rifling …, When it comes to .300 Blackout pistols, Daniel has a great chrome-lined 10.3-inch model with a 1:8 twist and heavy Mil-spec heavy phosphate coating that is hard to beat. Weight is a handy 20-ounces. 5. Diamondback .300 AAC Blackout Pistol-Length Barrel., Jun 12, 2015 ... Comments9 · 300 BLK - Ballistic Advantage 10.3" Hanson Premium barrel · 300 Blackout Barrel Lengths and Affects on Velocity. Silencer School EP...., Barrel length significantly impacts velocity. Short barrels favor subsonic ammo. Long barrels take advantage of supersonic ammo’s potential. Ammo development continues to push 300 BLK’s capabilities for hunting and self-defense. Regular practice is essential to understand your rifle’s practical effective range., The 300 Blackout’s .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 round’s. So heavy …, Adding more barrel length after that point might still increase the velocity a bit, but the added weight isn’t always worth the extra dollop of velocity. For 5.56 NATO, that point is …, Stainless Lo-Pro Gas Block Barrel 300 Blackout. $ 320.00 – $ 470.00. BARREL LENGTH. Choose BARREL LENGTH 7.94" Diplomat 10.5" Shorty 12.5" Crusader 14.5" Afghan 16" Recon. HEADSPACED BOLT. Choose HEADSPACED BOLT Yes No Clear. Stainless Lo-Pro Gas Block Barrel 300 Blackout quantity. Add to cart., The forearm and barrel assembly swap out readily. There have been rumors that a 5.56mm conversion is in the making, but to a certain degree this would defeat the purpose of the gun. What really makes the Rattler unique is its .300 BLK chambering. The .300 BLK is essentially a .30-caliber bullet seated into a slightly modified 5.56mm casing., BENEFIT TR CIT W/ BLK LIFEPATH DYN RET- Performance charts including intraday, historical charts and prices and keydata. Indices Commodities Currencies Stocks, If you are going to run a 16 inch barrel AR just get an LWRCI SIX8 rifle which puts out 1612 ft/lb of energy with 120 gr SST from Hornady vs using 110 gr 300 BLK out of 16 inch gives you 1421 ft/lb. Yeah you make a bigger hole with a 30 cal but you have more energy in the 6.8 SPC. If you want the bigger hole AND energy get a SCAR 17., The 300 ACC Blackout utilizes a .223 parent case shortened to 1.368″ and necked up to accept .308″ diameter bullets. Available in both supersonic and subsonic factory offerings, the 300 …, Max Case Length: 1.368" Trim-to Length: 1.358" Max Cart. OAL: 2.260" RCBS Shell Holder: # 10 Test Firearm: Universal Receiver Barrel Length: 16" 150 gr Grand Slam® SP/CANN 150 gr SPFN Hot-Cor® 150 gr Spitzer BTSP 150 gr Spitzer SP Hot-Cor® 30 Speer Part No. Weight, grains COAL Tested Ballistic Coefficient Sectional Density 2026 150 2.190 ..., We would like to show you a description here but the site won’t allow us. , Nov 8, 2023 ... The short-barrel dogma that everyone keeps repeating applies to subsonic only. With correctly developed subs, barrel length doesn't matter for ..., 300 AAC Blackout uggested Bullet se Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. *Recommended Powder C Compressed Load 2 110-grain TAC-TX FB Sectional Density .166 Ballistic Coefficient .289 C.O.A.L 2.250” Powder Minimum Maximum Charge (grains) Velocity (fps) Charge (grains) Velocity (fps) H110 16.5 1980 17.5 ... , The 300 Blackout is essentially an intermediate, 30 caliber centerfire rifle cartridge. This 30 caliber cartridge, or 7.62X35mm, is a popular rifle round due to its effectiveness in AR-15s with a suppressor. The 300 BLK, as it’s sometimes called, got its start from the 300 Whisper (which was developed in the 1990s)., 300 Blackout Full-Auto AR-15. The rifle used in this story is a “special custom” full-auto AR-15. Note: Ultimate Reloader is a Type 07 Firearms Manufacturer (FFL) and Class 2 SOT, otherwise this would be illegal. Some information about the rifle follows: Upper: Anderson Manufacturing AR-15 300 Blackout Upper: 16″ Carbine length barrel, …, The 300 Blackout is essentially an intermediate, 30 caliber centerfire rifle cartridge. This 30 caliber cartridge, or 7.62X35mm, is a popular rifle round due to its effectiveness in AR-15s with a suppressor. The 300 BLK, as it’s sometimes called, got its start from the 300 Whisper (which was developed in the 1990s)., From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace with precision PTG gauges. Barrel Material: 4150 CMV. Barrel Type: Button Rifled. Barrel Caliber: 300 BLK. Barrel Twist: 1:8. Barrel Length: 10.5”. Barrel Profile: GUNNER., May 17, 2022 · The Faxon Firearms AR-15 Barrels .300 Blackout Gunner Profile comes in three distinct barrel lengths, two pistol barrels at 7.5″ and 10.5″ and a legal carbine 16″ barrel. The QPQ nitride finish with an additional NP3 coating makes this barrel nearly impervious to surface wear, rust, and corrosion. , Using 500 meters as a benchmark, a NATO standard 5.56x45mm M855 projectile fired at 2,900 FPS will have 100 inches of drop, 41 inches of drift, and 291 ft.-lbs. of energy at that distance. In contrast, a .300 Blackout 125 grain projectile at 2,220 FPS has: 100 inches drop at 440 meters. 41 inches drift at 484 meters., A shorter barrel is known to be louder with a 556 gun but with 300 blackout I have actually heard that a 6.25 inch barrel like the KAK baby blond will be the best if looking for maximum suppression since velocity …, The .300 BLK has easily been the most successful new caliber in the last 20 years. Besides the easy conversion between 5.56 and .300 BLK, the .300 BLK does a lot the 5.56 can’t. First off, it’s a very versatile load with projectiles weights ranging from 110 grains to 220 grains. (L to R) 5.56 NATO, .300 BLK, .30 Carbine., Due to the extremely short barrel length (5.5in), 5.56 NATO is going to lose much more velocity, and consequently maintain much less energy than a 300 Blackout chambered Rattler. Sig also offers the Rattler in a pistol variant, with ATF compliant braces, and SBR variants, if you want to pay for a tax stamp., Edit: I assumed you were talking about velocity differences since you were asking about barrel length. It is well know that a faster twist rate will potentially stabilize heavier bullets better but FWIW, I’ve shot a variety of bullets 110-220 gn with 1:8 and 1:7 and never had stability issues - barrel length has been a constant 10.5 tho, From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace with precision PTG gauges. Barrel Material: 4150 CMV. Barrel Type: Button Rifled. Barrel Caliber: 300 BLK. Barrel Twist: 1:8. Barrel Length: 10.5”. Barrel Profile: GUNNER., Oct 21, 2016 · Re: Muzzle velocity and barrel length. by bangbangping » Fri Oct 21, 2016 7:55 pm. Bgd wrote: I want to use the 135 grain sierra varmiter in the 300 blackout. I don't know what kind of velocity you're looking for, but you don't need a whole heck of a lot with that bullet. Here's a pic of what I could find of one that went into 10% gel at ~2000 ... , The 300 AAC (Advanced Armament Corporation) Blackout (designated 300 BLK by SAAMI) is a 7.82mm caliber designed to outperform in terminal ballistics over the 5.56 NATO/.223 Remington. It’s designed for the AR platform and delivers superb knock-down power in close-quarter battles. The 5.56 NATO still reigns supreme in the military, police, and ... , Hi, I’m Philip Guo, an assistant professor of Computer Science at the University of Rochester. Since my research interests are in human-computer interaction and online education, I..., 8 .300 Blackout. 8.1 Best Barrel Length For .300 Blackout. 8.1.1 For Subsonic Loads. 8.1.2 For Maximum Velocity. 8.1.3 Best Overall Barrel Length for .300 Blackout. 9 .32 ACP. …, For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. 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 the longer range engagements with a suppressed 300 Blackout, use a 16 ...